Unit 1: Basic Bio

Last updated over 6 years ago

41 questions

1

2

1

Library

Unit 1: Basic Bio

Last updated over 6 years ago

41 questions

1

Base your answer to the question on the information below and on your knowledge of biology.
A student designed an experiment to investigate a claim that athletes would have lower heart rates than nonathletes during exercise. After the students classified themselves as an athlete or a nonathlete, their resting pulses were determined. Then all the students performed the same exercise for four minutes and their heart rates were determined by recording the pulse rate in beats per minute. The students coninued to measure their pulse rates for an additional four minutes. The average heart rate per minute for each group was determined. The data were recorded, as shown on the table below.

State one Hypothesis

1

A scientist took samples from a culture of E.coli bacteria and placed them in each of 100 petri dishes. Once the bacteria began to grow in the dishes, she exposed 50 of the dishes to x-ray radiation and 50 to natural light. After five days, she examined samples of DNA from the bacteria and recorded any differences she found between the DNA of the two groups. State one hypothesis the experiment would test.

2

Base your answer to the information below and on your knowledge of biology.
African violet plants are grown for their delicate, colorful flowers and furry, soft leaves. People often eant to touch the leaves and brush the hairy leaves with their fingers. Growers and plant owners were converned that this could negatively affect the plant. Of particular convern was the presence of body lotion or other skin ptoducts on the hands of person touching the leaves.
A student thought this might be basis of a science project. He selected two African violet plants. Ten leaves on each of the two plants were brushed with a gloved hand for 30 seconds, once a day for a period of five days. The difference was that leaves of the second plant were brushed with a gloved hand that had hand lotion applied to the glove.
As part of the peer review process, evaluate the students experiment. As part of your evaluation be sure to:
State one possible hypothesis for the experiment proposed by the student
describe the type of data that should be collected to determine if the brushing with lotion was having a negative effect on the African violet plant

1

Base your answer to the question on the information below and on your knowledge of biology.
Scientists will often grown bacteria in prepated petri dishes. In some experiiments, the petri dish will also contain paper disks soaked in a particular antibiotic. The area where the bacteria do not grow is called the zone of inhibition, or ZOI. The diameter of the ZOI indicates the effectiveness of the antibiotic.
The ZOI data collected by one scientist while trying to determine which disk (A,B,C, or D) is most effective ar killing Streptoccus bacteria are: Disk D-9 mm, Disk B-8mm, Disc C-0mm
Which disk is most likely the control for this experiment? Support your answer.

1

A student hypothesized that drinking tea would cause an increase in pulse rate. He measured his pulse 20 minutes after drinking a glass of tea. It was 86 beats per minute. State one error in the experiment.

1

Base your answer to the question on the information and diagram below and on your knowledge of biology.

In the early 1600s, a scientist planted a willow tree that weighed 5 pounds in 200 pounds of dry soil. He placed it outside and watered it for 5 years. At the end of that time, he observed that the tree had gained 164 pounds and 3 ounces, while the soil had lost just 2 ounces.

From this he concluded that plants gain weight from the water they take in. His conclusion was based on

the input of scientists from many countries doing similar studies.

the application of advanced technologies to the study of a problem.

careful observations, measurements, and inferences from his data.

an extrusive knowledge of the process of photosynthesis. 

In the 1920s, two conflicting newspaper headlines called attention to a mysterious new illness.

1921- " Don't breathe the air! Mysterious disease thousands is caused by breating the air in swaps."
1922- "Dont drink the water! Mysterious disease affecting thousands is caused by drinking the water in swaps."
Another series of headlines apperateed in 1940s and 50s
1945- "New technology finds tiny worms on swap vegetation.1950-"Tiny worms dounds in lungs of patients suffering from mysterious swamp disease."
1952- Mysterious disease known to be caused by worms is given the name Swamp Ling Disease."

Headlines such as these best illustrate the concept that

scientific explanations are tentative and subject to change

some newspapers are not honest and report incorrect information on purpose

worms can enter the body many different ways

worms found in swamps should not be used for fishing. 

The major role of carbohydrates in the human diet is to

form the membranes that surround mitochondria

act as a catalyst for cellular reactions

supply energy for the body

provide building blocks for amino acids

Base your answer to the questions on the information, diagram, and data table below and on your knowledge of biology.
The laboratory setup represented below was used to investigate the effect of light on aquatic plants. Equal amounts of a green water plant were placed in beakers with gas-collecting tubes. The beakers were placed in a termperature- controlled enviornment. The light source was placed at different distances from the beakers. After an hour, the amount of gas collected from the plants in each tube was measured and recorded in the data table.

Row 1: Independent Variable: amount of gas collected, Dependent Variable: distance of beaker from light source. 

Row 2: Independent Variable: number of plants in the beaker, Dependent Variable Temperature of plant

Row 3: Independent Variable: distance of beaker from light source, Dependent Variable: amount of gas collected

Row 4: Independent Variable: minutes of exposure to the light source, Dependent Variable: rate of gas collection

A student wondered if butterflies would show any differences in their wing color if, as caterpullars, they were grown in the dark or grown in bright white light. Which statement would be a possible hypothesis for an experiment to test this idea?

Caterpillars exposed to bright white light will show more blue and green in their wings when they become butterflies than caterpillars kept in the dark

Will caterpillars kept in the dark have brighter wings when they become butterflies than caterpillars exposed to bright white light? 

Ten caterpillars will be kept in the dark and ten caterpillars will be exposed to bright white light and allowed to develop into butterflies. 

Results show that caterpillars kept in the dark and those exposed to bright white light had the same wing color when they became butterflies.

Base you answer to the question on the information and graphs below, and on you knowledge of biology. The diagrams below show the number of fish in a lake and the average water temperature in the lake for the months of May through October.
During certain times of the year, bears feed heavily on a population of fish in a lake. At other times of the year, the bear population feeds primarily on fruits, berries and insects.

During which month would the bears in the area have the most fish available?

May

July

August

October

Organic compounds are used as building blocks for

water, DNA, and starches

water, proteins, and oxygen

proteins, DNA, and carbon dioxide

proteins, starches, and fats

Base your answer to the question on the information and data table below and on your knowledge of biology.
A student wanted to investigate the effect of light on the rate of riprening of tomatoes. She set yp four pots of the same size with identical amounts of soil, water and type of tomato plants. Each plant was exposed to a different inensity of light as shown in the table below.

To report the final results, which label would be most appropriate for the third column of the data table?

Height of Tomato Plants (cm)

Average Ripening Time (days

Average Weight of Tomatoes per Plant (grams)

Acidity of Tomatoes (pH)

Base your answer to the question on the information below and on your knowledge of biology.

A student designed an experiment to investigate a claim that athletes would have lower heart rates than nonathletes during exercise. After the students classified themselves as an athlete or a nonathlete, their resting pulses were determined. Then all the students performed the same exercise for four minutes and their heart rates were determined by recording the pulse rate in beats per minute. The students coninued to measure their pulse rates for an additional four minutes. The average heart rate per minute for each group was determined. The data were recorded, as shown on the table below.

To improve the validity of the conclusion reached in this experiment, the students shouls repeat the experiment

disregarding any data that don't fit the hypothesis

with a larger number of athletes and nonathletes

comparing the heart rates and breathing rates of males and females

with the athletes doing different exercises than the nonathletes

Base your answer to the question on the information below and on your knowledge of biology.

A student designed an experiment to investigate a claim that athletes would have lower heart rates than nonathletes during exercise. After the students classified themselves as an athlete or a nonathlete, their resting pulses were determined. Then all the students performed the same exercise for four minutes and their heart rates were determined by recording the pulse rate in beats per minute. The students coninued to measure their pulse rates for an additional four minutes. The average heart rate per minute for each group was determined. The data were recorded, as shown on the table below.

Which Statement is best supported by the data in the chart?

After exercise, the nonathletic students had a lower heart rate than the athletic students. 

After exercise, the heart rates of the athletic students returned to resting pulse in four minutes. 

During exercise, both groups of tudents had the same increase above their resting pulse. 

During exercise, the athletic students had a higher heart rate than the nonatletic students. 

Proteins, starch, and DNA are similar in that they are all

organic compounds 

parts of genes

made of amino acids

made of simple sugars

A student collected data from an experiment on muscle fatigue. In order to interpret these data, the student should

ignore the data because they do not support their hypothesis

recalculate the daya so that the numbers are easier to work with

share the daya with a student who has none

organize the data into a table or graph. 

Base your answer to the question on the information and chart below and on your knowledge of biology.

In recent years, biologists have noticed that honeybees responsible for pollinating food crops aross the United States are dying at an alarming rate. Farmsers, economists, and biologists are very worried about the impact that the loss of honeybees might have on the food supply.
Relying on Bees
Some of the most valuable fruits, vegetables, nuts and field crops depend on insect pollinators, particularly honeybees. Besides insects, other means of pollination include birds, wind and rainwater.

Based on this information and the graph provided, which crops are most at risk if honeybees continue to decline?

strawberries, peanuts, and grapes

almonds, apples, and blueberries

almonds, oranges, and soybeans

peaches, cotton, and grapes

In an appropriately designed experiment, a scientist is able to test the effect of

a single variable

multiple variables

the hypothesis

scientific observations

The chart below provides information about two scientific discoveries in the field of biology.

Which statement is the best interpretation of the material presented in the chart?

Scientific explanations are built by combining evidence that can be observed with what people already know. 

Inquiry involves making judgements about the reliability of the source and relevance of the information. 

Science provides information, but values are also essential to making ethical decisions. 

Hypotheses are valuable even if they turn out not to be true. because they may lead to further investigation. 

The shape of a protein molecule directly determines its

movements through the cytoplasm

functions inside and outside of cells. 

roles in building water molecules

circulation throughout they body

Base your answer to the question on the graphs below and on your knowledge of biology. The graphs show the effect of seweage (human organic waste) flowing into a lake on the level of dissolved oxygen in the water and the size of different fish populations.

Which statement concerning the oxygen level in the lake can be inferred from the graphs.

Trout and whitefish require higher oxygen levels than do carp. 

Carp are more sensitive to oxygen levels than are other fish. 

The fish in this lake all require the same amount of oxygen for survival

Walleye populations were highest when the oxygen levels were lowest. 

Which activity would be an appropriate first step when designing an experiment?

reporting a conclusion based on multiple experimental trials

research the problem, using information from a variety of sources

creating a data table to organize experimental observations

repeating the experiment with a different hypothesis

Base you answer to the question on the information and data table below and on your knowledge of biology.

A group of students obtained the following data while trying to determine the effect of exercise on pulse rate.

Which statement is an example of an observation the students could have made?

Pulse rates in beats per minute decrease for all people after exercise

Student A most likely exercises regularly. 

The pulse rate of student C was dangerously low. 

The pulse rate of student F increased by 30 beats per minute. 

Which row in the chart below correctly pairs a food molecule with its building block?

Row Food Molecule Building Block
1 starch amino acid
2 sugar starch
3 protein amino acid
4 amino acid sugar

1

2

3

4

Base your answer to the question on the information below and on your knowledge of biology.

Five groups of corn seeds, each containing 275 seeds, were soaked for 2 hour in different conventration of gibberellic acid, a plant growth hormone. After 2 hour, the seeds were rinsed in tap water and drained of all excess water. The seeds were the placed on paper towels and keps moist for 7 days. After 7 days, the growing stems were cut and weighed to determine the increase in growth. Then, the percent increase in growth compated to the growth of a group of untreated seeds was calculated. The results were recorded and are shown in the data table below.

Which conclusion is supported by the daya from this investigation?

A concentration of gibberellic acid under 330 ppm inhibits growth of corn plants. 

Plants from untreated corn seeds grow better than those treated with gibberellic acid at a concentration of 660 ppm. 

A conventration of gibberellic acid over 330 ppm makes corn seeds germinate best. 

Corn seedlings treated with gibberellic acid at concentrations between 225 and 660 ppm grow better than untreated seedlings. 

Base your answer to the question on the diagram below and on your knowledge of biology.

An observable trend in the wold and moose data between 1980 and 1995 is

as the world population decreses, the moose population increases

as the wold population decreases, the moose population decreases

the numbers of wolves and moose are relatively constant

the number of wolves and moose appear to be unrelated. 

Base your answer to the question on the diagram and on your knowledge of biology.

The population of wolves in 1980 was close to

20

50

800

1000

In an experiment to determine the effect of exercise on pulse rate, a student checks his pulse before and after exercising for several minutes. The purpose of checking his pulse rate before exercising is that it

serves as the conclusion for the experiment

is needed to justify the sample size

serves as a control for the experiment

is needed to formulate a hypothesis

Base your answer to the question on the graph below and on your knowledge of biology. The graph shows the level of gen expression of five different genes in normal and cancerous cells.

Which statement is a valid inference that can be made based on the data in this graph?

The change in the level of gene expression in gene 4 could indicate it plays a major rold in the development of cancer. 

Slight decreases in gene expression will always result in the formation of cancer cells

Cells will develop cancer if the gene expression of these five genes remains below four peptides per second. 

An increase in the level of gene expression in these five genes is necessary for cancer to develop in cells. 

The graph below shows changes in the concentrations of glucose and insulin in the blood of a human over a period of time.

Which statement correctly explains these changes?

High glucose levels cause more insulin to be released

High Insulin levels cause more glucose to be released

Low gloucose levels cause more insulin to be released

Low insulin levels cause more glucose to be released. 

Base your answer to the question on the information below and on your knoeledge of biology.
An experiment was carried out to answer the question "Does the pH of water affect the growth of radish plants?" Two groups of ten radish plants were set up. One group was watered with having a pH of 3.0, and the other group was watered with water having a pH of 7.0. both groups of plants revcevied the same amount and intensity of light, the same amount of water, and they were grown in the same type of soil. The heights of the radish plants were measured every 2 days for a period of 2 weeks.

heights of the plants

pH of the water

temperature of the water

type of soil

Base your answer to the question on the information below and on your knoeledge of biology.
An experiment was carried out to answer the question "Does the pH of water affect the growth of radish plants?" Two groups of ten radish plants were set up. One group was watered with having a pH of 3.0, and the other group was watered with water having a pH of 7.0. both groups of plants revcevied the same amount and intensity of light, the same amount of water, and they were grown in the same type of soil. The heights of the radish plants were measured every 2 days for a period of 2 weeks.
Which sentence is a possible hypothesis that was tested in this experiment?

Does the pH of water affect the growth of radish plants? 

Will the amount of water alter the heights of the radish plants? 

The temperature of the water will affect the height of the radish plants

The pH of the water will affect the heights of the radish plants. 

An investigation was carried out to determine which of three antibacterial soaps is most effective. Four petri dishes labeled A,B,C, and D were set up. The same amound and type of bacteria was added to each dish. Next, 2 mL of a different brand of soap were added to dishes B,C, and D. Then, 2 mL of water were added to dish A, instead of soap. The dishes were incubated at 37°C for 25 hours. At the end of the investigation, the amount of bacteria in each dish was determined. Dish D has the least bacteria. It was concluded that the soap in dish D was the most effective soap to use against bacteria.
Which statement best describes the validity of this conclusion?

The conclusion is not valid since the same amount of bacteria was used in each dish. 

The conclusion is valid since too small a sample of bacteria was used in this inverstigation. 

The conclusion is valid since the amounts of bacteria were measured at the end of the investigation. 

The conclusion might not be valid since the investigation was carried out only once. 

Which statement describes starches, fats, proteins, and DNA

They are used to store genetic information

They are complex molecules made from smaller molecules. 

They are used to assemble larger inorganic materials. 

They are simple molecules used as energy sources. 

Which statement most accurately describes scientific inquiry?

It ignotes infromation from other sources

It does not allow scientists to judge the reliability of their sources

It should never involve ethical decisions about the application of scientific knowledge. 

It may lead to explanation that combine data what people aready know about their surroundings. 

Base your answer to the question on the information below and on your knowledge of biology.
A student designed an experiment to investigate a claim that athletes would have lower heart rates than nonathletes during exercise. After the students classified themselves as an athlete or a nonathlete, their resting pulses were determined. Then all the students performed the same exercise for four minutes and their heart rates were determined by recording the pulse rate in beats per minute. The students coninued to measure their pulse rates for an additional four minutes. The average heart rate per minute for each group was determined. The data were recorded, as shown on the table below.

State one Hypothesis

A scientist took samples from a culture of E.coli bacteria and placed them in each of 100 petri dishes. Once the bacteria began to grow in the dishes, she exposed 50 of the dishes to x-ray radiation and 50 to natural light. After five days, she examined samples of DNA from the bacteria and recorded any differences she found between the DNA of the two groups. State one hypothesis the experiment would test.

Base your answer to the information below and on your knowledge of biology.
African violet plants are grown for their delicate, colorful flowers and furry, soft leaves. People often eant to touch the leaves and brush the hairy leaves with their fingers. Growers and plant owners were converned that this could negatively affect the plant. Of particular convern was the presence of body lotion or other skin ptoducts on the hands of person touching the leaves.
A student thought this might be basis of a science project. He selected two African violet plants. Ten leaves on each of the two plants were brushed with a gloved hand for 30 seconds, once a day for a period of five days. The difference was that leaves of the second plant were brushed with a gloved hand that had hand lotion applied to the glove.
As part of the peer review process, evaluate the students experiment. As part of your evaluation be sure to:
State one possible hypothesis for the experiment proposed by the student
describe the type of data that should be collected to determine if the brushing with lotion was having a negative effect on the African violet plant

Base your answer to the question on the information below and on your knowledge of biology.
Scientists will often grown bacteria in prepated petri dishes. In some experiiments, the petri dish will also contain paper disks soaked in a particular antibiotic. The area where the bacteria do not grow is called the zone of inhibition, or ZOI. The diameter of the ZOI indicates the effectiveness of the antibiotic.
The ZOI data collected by one scientist while trying to determine which disk (A,B,C, or D) is most effective ar killing Streptoccus bacteria are: Disk D-9 mm, Disk B-8mm, Disc C-0mm
Which disk is most likely the control for this experiment? Support your answer.

A student hypothesized that drinking tea would cause an increase in pulse rate. He measured his pulse 20 minutes after drinking a glass of tea. It was 86 beats per minute. State one error in the experiment.

Base your answer to the question on the diagram below and on your knowledge of biology.
The diagram represents a portion of a starch molecule.

The builfing blocks for this molecule are

amino acids

simple sugars

fats

molecular bases

The diagram below represents a sequence of events that occurs in living things.

Letter X Represents

inorganic molecules

organic molecules

biological catalysts

simple sugars

What substance is an inorganic molecule?

starch

DNA

water

fat

Three days after an organism eats some meat, many of the organic molecules orginially contained in the meat would be found in newly formed molecules of

glucose

protein

starch

oxygen

Base your answer to this question on the information below and on your knowledge of biology.
Organisms living in a bog environment must be able to tolerate nitrogen-poor, acidic conditions. Bog plants such as the Venus flytrap and sundew are able to obtain their nitrogen by attracting and consuming insects. These plants produce chemicals that break down the insects into usable compounds.
Which compounds present in insects are composed of the amino acids that provide the Venus flytrap and sundew with much of their nitrogen?

Proteins

sugars

carbohydrates

fats

Base your answer to the question on the information and diagram below and on your knowledge of biology.

In the early 1600s, a scientist planted a willow tree that weighed 5 pounds in 200 pounds of dry soil. He placed it outside and watered it for 5 years. At the end of that time, he observed that the tree had gained 164 pounds and 3 ounces, while the soil had lost just 2 ounces.

From this he concluded that plants gain weight from the water they take in. His conclusion was based on

the input of scientists from many countries doing similar studies.

the application of advanced technologies to the study of a problem.

careful observations, measurements, and inferences from his data.

an extrusive knowledge of the process of photosynthesis. 

In the 1920s, two conflicting newspaper headlines called attention to a mysterious new illness.

1921- " Don't breathe the air! Mysterious disease thousands is caused by breating the air in swaps."
1922- "Dont drink the water! Mysterious disease affecting thousands is caused by drinking the water in swaps."
Another series of headlines apperateed in 1940s and 50s
1945- "New technology finds tiny worms on swap vegetation.1950-"Tiny worms dounds in lungs of patients suffering from mysterious swamp disease."
1952- Mysterious disease known to be caused by worms is given the name Swamp Ling Disease."

Headlines such as these best illustrate the concept that

scientific explanations are tentative and subject to change

some newspapers are not honest and report incorrect information on purpose

worms can enter the body many different ways

worms found in swamps should not be used for fishing. 

The major role of carbohydrates in the human diet is to

form the membranes that surround mitochondria

act as a catalyst for cellular reactions

supply energy for the body

provide building blocks for amino acids

Base your answer to the questions on the information, diagram, and data table below and on your knowledge of biology.
The laboratory setup represented below was used to investigate the effect of light on aquatic plants. Equal amounts of a green water plant were placed in beakers with gas-collecting tubes. The beakers were placed in a termperature- controlled enviornment. The light source was placed at different distances from the beakers. After an hour, the amount of gas collected from the plants in each tube was measured and recorded in the data table.

Row 1: Independent Variable: amount of gas collected, Dependent Variable: distance of beaker from light source. 

Row 2: Independent Variable: number of plants in the beaker, Dependent Variable Temperature of plant

Row 3: Independent Variable: distance of beaker from light source, Dependent Variable: amount of gas collected

Row 4: Independent Variable: minutes of exposure to the light source, Dependent Variable: rate of gas collection

A student wondered if butterflies would show any differences in their wing color if, as caterpullars, they were grown in the dark or grown in bright white light. Which statement would be a possible hypothesis for an experiment to test this idea?

Caterpillars exposed to bright white light will show more blue and green in their wings when they become butterflies than caterpillars kept in the dark

Will caterpillars kept in the dark have brighter wings when they become butterflies than caterpillars exposed to bright white light? 

Ten caterpillars will be kept in the dark and ten caterpillars will be exposed to bright white light and allowed to develop into butterflies. 

Results show that caterpillars kept in the dark and those exposed to bright white light had the same wing color when they became butterflies.

Base you answer to the question on the information and graphs below, and on you knowledge of biology. The diagrams below show the number of fish in a lake and the average water temperature in the lake for the months of May through October.
             During certain times of the year, bears feed heavily on a population of fish in a lake. At other times of the year, the bear population feeds primarily on fruits, berries and insects.

During which month would the bears in the area have the most fish available?

May

July

August

October

Organic compounds are used as building blocks for

water, DNA, and starches

water, proteins, and oxygen

proteins, DNA, and carbon dioxide

proteins, starches, and fats

Base your answer to the question on the information and data table below and on your knowledge of biology.
A student wanted to investigate the effect of light on the rate of riprening of tomatoes. She set yp four pots of the same size with identical amounts of soil, water and type of tomato plants. Each plant was exposed to a different inensity of light as shown in the table below.

To report the final results, which label would be most appropriate for the third column of the data table?

Height of Tomato Plants (cm)

Average Ripening Time (days

Average Weight of Tomatoes per Plant (grams)

Acidity of Tomatoes (pH)

Base your answer to the question on the information below and on your knowledge of biology.

A student designed an experiment to investigate a claim that athletes would have lower heart rates than nonathletes during exercise. After the students classified themselves as an athlete or a nonathlete, their resting pulses were determined. Then all the students performed the same exercise for four minutes and their heart rates were determined by recording the pulse rate in beats per minute. The students coninued to measure their pulse rates for an additional four minutes. The average heart rate per minute for each group was determined. The data were recorded, as shown on the table below.

To improve the validity of the conclusion reached in this experiment, the students shouls repeat the experiment

disregarding any data that don't fit the hypothesis

with a larger number of athletes and nonathletes

comparing the heart rates and breathing rates of males and females

with the athletes doing different exercises than the nonathletes

Base your answer to the question on the information below and on your knowledge of biology.

A student designed an experiment to investigate a claim that athletes would have lower heart rates than nonathletes during exercise. After the students classified themselves as an athlete or a nonathlete, their resting pulses were determined. Then all the students performed the same exercise for four minutes and their heart rates were determined by recording the pulse rate in beats per minute. The students coninued to measure their pulse rates for an additional four minutes. The average heart rate per minute for each group was determined. The data were recorded, as shown on the table below.

Which Statement is best supported by the data in the chart? 

After exercise, the nonathletic students had a lower heart rate than the athletic students. 

After exercise, the heart rates of the athletic students returned to resting pulse in four minutes. 

During exercise, both groups of tudents had the same increase above their resting pulse. 

During exercise, the athletic students had a higher heart rate than the nonatletic students. 

Proteins, starch, and DNA are similar in that they are all

organic compounds 

parts of genes

made of amino acids

made of simple sugars

A student collected data from an experiment on muscle fatigue. In order to interpret these data, the student should

ignore the data because they do not support their hypothesis

recalculate the daya so that the numbers are easier to work with

share the daya with a student who has none

organize the data into a table or graph. 

Base your answer to the question on the information and chart below and on your knowledge of biology. 
               
             In recent years, biologists have noticed that honeybees responsible for pollinating food crops aross the United States are dying at an alarming rate. Farmsers, economists, and biologists are very worried about the impact that the loss of honeybees might have on the food supply. 
                                                Relying on Bees
Some of the most valuable fruits, vegetables, nuts and field crops depend on insect pollinators, particularly honeybees. Besides insects, other means of pollination include birds, wind and rainwater. 


Based on this information and the graph provided, which crops are most at risk if honeybees continue to decline? 

strawberries, peanuts, and grapes

almonds, apples, and blueberries

almonds, oranges, and soybeans

peaches, cotton, and grapes

In an appropriately designed experiment, a scientist is able to test the effect of

a single variable

multiple variables

the hypothesis

scientific observations

The chart below provides information about two scientific discoveries in the field of biology. 

Which statement is the best interpretation of the material presented in the chart? 

Scientific explanations are built by combining evidence that can be observed with what people already know. 

Inquiry involves making judgements about the reliability of the source and relevance of the information. 

Science provides information, but values are also essential to making ethical decisions. 

Hypotheses are valuable even if they turn out not to be true. because they may lead to further investigation. 

The shape of a protein molecule directly determines its

movements through the cytoplasm

functions inside and outside of cells. 

roles in building water molecules

circulation throughout they body

Base your answer to the question on the graphs below and on your knowledge of biology. The graphs show the effect of seweage (human organic waste) flowing into a lake on the level of dissolved oxygen in the water and the size of different fish populations. 

Which statement concerning the oxygen level in the lake can be inferred from the graphs. 

Trout and whitefish require higher oxygen levels than do carp. 

Carp are more sensitive to oxygen levels than are other fish. 

The fish in this lake all require the same amount of oxygen for survival

Walleye populations were highest when the oxygen levels were lowest. 

Which activity would be an appropriate first step when designing an experiment? 

reporting a conclusion based on multiple experimental trials

research the problem, using information from a variety of sources

creating a data table to organize experimental observations

repeating the experiment with a different hypothesis

Base you answer to the question on the information and data table below and on your knowledge of biology. 

A group of students obtained the following data while trying to determine the effect of exercise on pulse rate. 

Which statement is an example of an observation the students could have made? 

Pulse rates in beats per minute decrease for all people after exercise

Student A most likely exercises regularly. 

The pulse rate of student C was dangerously low. 

The pulse rate of student F increased by 30 beats per minute. 

Which row in the chart below correctly pairs a food molecule with its building block? 

Row                     Food Molecule             Building Block
1                           starch                            amino acid
2                           sugar                             starch
3                           protein                          amino acid
4                           amino acid                    sugar

1

2

3

4

Base your answer to the question on the information below and on your knowledge of biology. 

Five groups of corn seeds, each containing 275 seeds, were soaked for 2 hour in different conventration of gibberellic acid, a plant growth hormone. After 2 hour, the seeds were rinsed in tap water and drained of all excess water. The seeds were the placed on paper towels and keps moist for 7 days. After 7 days, the growing stems were cut and weighed to determine the increase in growth. Then, the percent increase in growth compated to the growth of a group of untreated seeds was calculated. The results were recorded and are shown in the data table below. 

Which conclusion is supported by the daya from this investigation? 

A concentration of gibberellic acid under 330 ppm inhibits growth of corn plants. 

Plants from untreated corn seeds grow better than those treated with gibberellic acid at a concentration of 660 ppm. 

A conventration of gibberellic acid over 330 ppm makes corn seeds germinate best. 

Corn seedlings treated with gibberellic acid at concentrations between 225 and 660 ppm grow better than untreated seedlings. 

Base your answer to the question on the diagram below and on your knowledge of biology. 

An observable trend in the wold and moose data between 1980 and 1995 is

as the world population decreses, the moose population increases

as the wold population decreases, the moose population decreases

the numbers of wolves and moose are relatively constant

the number of wolves and moose appear to be unrelated. 

Base your answer to the question on the diagram and on your knowledge of biology. 

The population of wolves in 1980 was close to 

20

50

800

1000

In an experiment to determine the effect of exercise on pulse rate, a student checks his pulse before and after exercising for several minutes. The purpose of checking his pulse rate before exercising is that it

serves as the conclusion for the experiment

is needed to justify the sample size

serves as a control for the experiment

is needed to formulate a hypothesis

Base your answer to the question on the graph below and on your knowledge of biology. The graph shows the level of gen expression of five different genes in normal and cancerous cells. 

Which statement is a valid inference that can be made based on the data in this graph? 

The change in the level of gene expression in gene 4 could indicate it plays a major rold in the development of cancer. 

Slight decreases in gene expression will always result in the formation of cancer cells

Cells will develop cancer if the gene expression of these five genes remains below four peptides per second. 

An increase in the level of gene expression in these five genes is necessary for cancer to develop in cells. 

The graph below shows changes in the concentrations of glucose and insulin in the blood of a human over a period of time.

Which statement correctly explains these changes? 

High glucose levels cause more insulin to be released

High Insulin levels cause more glucose to be released

Low gloucose levels cause more insulin to be released

Low insulin levels cause more glucose to be released. 

Base your answer to the question on the information below and on your knoeledge of biology. 
    An experiment was carried out to answer the question "Does the pH of water affect the growth of radish plants?" Two groups of ten radish plants were set up. One group was watered with having a pH of 3.0, and the other group was watered with water having a pH of 7.0. both groups of plants revcevied the same amount and intensity of light, the same amount of water, and they were grown in the same type of soil. The heights of the radish plants were measured every 2 days for a period of 2 weeks. 

heights of the plants

pH of the water

temperature of the water

type of soil

Base your answer to the question on the information below and on your knoeledge of biology.
An experiment was carried out to answer the question "Does the pH of water affect the growth of radish plants?" Two groups of ten radish plants were set up. One group was watered with having a pH of 3.0, and the other group was watered with water having a pH of 7.0. both groups of plants revcevied the same amount and intensity of light, the same amount of water, and they were grown in the same type of soil. The heights of the radish plants were measured every 2 days for a period of 2 weeks.
Which sentence is a possible hypothesis that was tested in this experiment? 

Does the pH of water affect the growth of radish plants? 

Will the amount of water alter the heights of the radish plants? 

The temperature of the water will affect the height of the radish plants

The pH of the water will affect the heights of the radish plants. 

An investigation was carried out to determine which of three antibacterial soaps is most effective. Four petri dishes labeled A,B,C, and D were set up. The same amound and type of bacteria was added to each dish. Next, 2 mL of a different brand of soap were added to dishes B,C, and D. Then, 2 mL of water were added to dish A, instead of soap. The dishes were incubated at 37°C for 25 hours. At the end of the investigation, the amount of bacteria in each dish was determined. Dish D has the least bacteria. It was concluded that the soap in dish D was the most effective soap to use against bacteria. 
Which statement best describes the validity of this conclusion? 

The conclusion is not valid since the same amount of bacteria was used in each dish. 

The conclusion is valid since too small a sample of bacteria was used in this inverstigation. 

The conclusion is valid since the amounts of bacteria were measured at the end of the investigation. 

The conclusion might not be valid since the investigation was carried out only once. 

Which statement describes starches, fats, proteins, and DNA

They are used to store genetic information

They are complex molecules made from smaller molecules. 

They are used to assemble larger inorganic materials. 

They are simple molecules used as energy sources. 

Which statement most accurately describes scientific inquiry? 

It ignotes infromation from other sources

It does not allow scientists to judge the reliability of their sources

It should never involve ethical decisions about the application of scientific knowledge. 

It may lead to explanation that combine data what people aready know about their surroundings. 

Base your answer to the question on the diagram below and on your knowledge of biology. 
The diagram represents a portion of a starch molecule. 

The builfing blocks for this molecule are

amino acids

simple sugars

fats

molecular bases

The diagram below represents a sequence of events that occurs in living things.

Letter X Represents

inorganic molecules

organic molecules

biological catalysts

simple sugars

What substance is an inorganic molecule? 

starch

DNA

water

fat

Three days after an organism eats some meat, many of the organic molecules orginially contained in the meat would be found in newly formed molecules of

glucose

protein

starch

oxygen

Base your answer to this question on the information below and on your knowledge of biology. 
Organisms living in a bog environment must be able to tolerate nitrogen-poor, acidic conditions. Bog plants such as the Venus flytrap and sundew are able to obtain their nitrogen by attracting and consuming insects. These plants produce chemicals that break down the insects into usable compounds. 
Which compounds present in insects are composed of the amino acids that provide the Venus flytrap and sundew with much of their nitrogen? 

Proteins

sugars

carbohydrates

fats

Unit 1: Basic Bio

Unit 1: Basic Bio

A student hypothesized that drinking tea would cause an increase in pulse rate. He measured his pulse 20 minutes after drinking a glass of tea. It was 86 beats per minute. State one error in the experiment.

The major role of carbohydrates in the human diet is to

A student wondered if butterflies would show any differences in their wing color if, as caterpullars, they were grown in the dark or grown in bright white light. Which statement would be a possible hypothesis for an experiment to test this idea?

Organic compounds are used as building blocks for

Proteins, starch, and DNA are similar in that they are all

A student collected data from an experiment on muscle fatigue. In order to interpret these data, the student should

In an appropriately designed experiment, a scientist is able to test the effect of

The chart below provides information about two scientific discoveries in the field of biology. Which statement is the best interpretation of the material presented in the chart?

The shape of a protein molecule directly determines its

Which activity would be an appropriate first step when designing an experiment?

Base you answer to the question on the information and data table below and on your knowledge of biology. A group of students obtained the following data while trying to determine the effect of exercise on pulse rate. Which statement is an example of an observation the students could have made?

Which row in the chart below correctly pairs a food molecule with its building block? Row Food Molecule Building Block1 starch amino acid2 sugar starch3 protein amino acid4 amino acid sugar

Base your answer to the question on the diagram below and on your knowledge of biology. An observable trend in the wold and moose data between 1980 and 1995 is

Base your answer to the question on the diagram and on your knowledge of biology. The population of wolves in 1980 was close to

In an experiment to determine the effect of exercise on pulse rate, a student checks his pulse before and after exercising for several minutes. The purpose of checking his pulse rate before exercising is that it

Base your answer to the question on the graph below and on your knowledge of biology. The graph shows the level of gen expression of five different genes in normal and cancerous cells. Which statement is a valid inference that can be made based on the data in this graph?

The graph below shows changes in the concentrations of glucose and insulin in the blood of a human over a period of time.Which statement correctly explains these changes?

Which statement describes starches, fats, proteins, and DNA

Which statement most accurately describes scientific inquiry?

A student hypothesized that drinking tea would cause an increase in pulse rate. He measured his pulse 20 minutes after drinking a glass of tea. It was 86 beats per minute. State one error in the experiment.

Base your answer to the question on the diagram below and on your knowledge of biology. The diagram represents a portion of a starch molecule. The builfing blocks for this molecule are

The diagram below represents a sequence of events that occurs in living things.Letter X Represents

What substance is an inorganic molecule?

Three days after an organism eats some meat, many of the organic molecules orginially contained in the meat would be found in newly formed molecules of

The chart below provides information about two scientific discoveries in the field of biology.

Which statement is the best interpretation of the material presented in the chart?

Base you answer to the question on the information and data table below and on your knowledge of biology.

A group of students obtained the following data while trying to determine the effect of exercise on pulse rate.

Which statement is an example of an observation the students could have made?

Which row in the chart below correctly pairs a food molecule with its building block?

Row Food Molecule Building Block
1 starch amino acid
2 sugar starch
3 protein amino acid
4 amino acid sugar

Base your answer to the question on the diagram below and on your knowledge of biology.

An observable trend in the wold and moose data between 1980 and 1995 is

Base your answer to the question on the diagram and on your knowledge of biology.

The population of wolves in 1980 was close to

Base your answer to the question on the graph below and on your knowledge of biology. The graph shows the level of gen expression of five different genes in normal and cancerous cells.

Which statement is a valid inference that can be made based on the data in this graph?

The graph below shows changes in the concentrations of glucose and insulin in the blood of a human over a period of time.

Which statement correctly explains these changes?

Base your answer to the question on the diagram below and on your knowledge of biology.
The diagram represents a portion of a starch molecule.

The builfing blocks for this molecule are

The diagram below represents a sequence of events that occurs in living things.

Letter X Represents