Gr8 Unit 4 End of Unit Assessment

Instructions

Ensure all tabs on your Chromebook are closed before beginning your assessment.
You will be given 70 minutes to complete your Unit 4 End of Unit Assessment.
Please read all questions carefully and make sure to check your work before submitting.

Required

1

The process of transferring energy during respiration occurs in a series of steps. This prevents too much heat from being released at one time. Maintaining an appropriate temperature is beneficial to an organism because:

Required

1

Blood sugar levels increase after a meal and eventually return to normal. This is represented in the diagram below.

This constant correcting of blood sugar levels within the body is accomplished by

Required

1

Describe one way the immune system could respond when it is exposed to the genetically altered Bacillus subtilis.

Required

1

Will individuals who have taken the vaccine be protected against future tetanus infections? Support your answer.

Required

1

Although the digestive system is primarily responsible for the breakdown of food, this process can be disrupted if the circulatory system malfunctions. The best explanation for this disruption is that:

Required

1

Which two body systems provide humans with the raw materials necessary for their cells to release energy?

Required

1

The diagram below illustrates the release of chemical A from a human cell in response to a specific stimulus.

Which cell structure plays a direct role in the release of this chemical from the cell?

Required

1

The diagram provides information about some of the digestive enzymes produced by the human pancreas.

Another important molecule not shown in the diagram is also produced by the pancreas. It functions to decrease glucose levels in the blood. This molecule is:

Required

1

Antibodies produced against one pathogen infecting the human body may not work against a different pathogen because antibodies are:

Required

1

State whether the new drug used without the chemotherapy drug would enable the immune system to successfully attack the cancer cells. Support your answer.

Required

1

Explain the role of white blood cells in the process of killing cancer cells.

Required

1

It may be harmful when people compete to see who can hold their breath the longest under water. Without oxygen, brain cells:

Required

1

Which statement is an example of a feedback mechanism in humans?

Required

1

Many disorders are due to the inability of an individual to break down a particular chemical. Sometimes these disorders can be treated by giving the affected individual the appropriate:

Base your answers to questions 15 on the information below and on your knowledge of biology.

                            Pulse Rates 
A student heard a sports news report that several fans who were wearing smartwatches received irregular heart rate warnings as they were viewing the last few minutes of a football playoff game. The alert stated that they had an irregular increase in heart rate during a time in which they were inactive. The student decided to conduct his own experiment in order to determine if watching an exciting sporting event would increase the pulse rates of viewers. He asked six of his friends to watch a championship game and had them take their pulse rates during the first quarter of the game and at the end of the game. The results are recorded in the data table below.

Required

1

The student stated that data from his experiment supported his claim that pulse rate increases when watching an exciting sporting event.

State an argument for why someone might not accept his claim.

Required

1

Changes in external temperatures often result in a person either sweating or shivering, as represented in the diagram below.

These responses are one way:

Base your answers to questions 17 and 18 on the information and diagram below and on your knowledge of biology.

A live plant was placed in a closed container in a lab. Sensors were set up to monitor the levels of oxygen in the container over several hours.

Required

1

At which hour were the lights turned on in the lab?

Required

1

During the 8 hours studied, the plant performed:

1

Complete question 19 on a separate sheet of paper
Make sure to show your work

1

Complete question 20 on a separate sheet of paper
Make sure to show your work

Required

1

Human cells have many molecules attached to their surfaces. Some of these molecules are involved in producing the symptoms associated with allergies. Histamine is a chemical produced by some human cells. When histamine binds to molecules on the surface of cells that line the nose and throat, the cells will swell and leak fluid, causing the characteristic itching, sneezing, and congestion associated with allergies. A model of this mechanism is represented below.

Antihistamines are medications taken to block this reaction. Which of the antihistamine molecules represented below would be the most effective?

Required

1

The structures most directly involved in the synthesis of cellular proteins are the:

Required

1

The diagram below represents changes that take place within the human body.

The diagram represents:

Required

1

During a lab experiment a student took his resting pulse rate, counting 23 beats in 20 seconds. The student then exercised for several minutes. The student’s pulse was taken immediately after the exercise, and then every minute for 6 minutes. The graph below shows changes in the pulse rate after the exercise was completed.

What was the student’s resting pulse rate in beats per minute?

Required

1

The diagram below represents a lab setup. The artificial cell (dialysis tube) contains a starch solution and the beaker contains a solution of starch indicator and water. The setup is left undisturbed for twenty minutes.

Identify one molecule, present in this setup, that will be able to pass through the dialysis tubing.

The process of transferring energy during respiration occurs in a series of steps. This prevents too much heat from being released at one time. Maintaining an appropriate temperature is beneficial to an organism because:

Blood sugar levels increase after a meal and eventually return to normal. This is represented in the diagram below.This constant correcting of blood sugar levels within the body is accomplished by

Describe one way the immune system could respond when it is exposed to the genetically altered Bacillus subtilis.

Will individuals who have taken the vaccine be protected against future tetanus infections? Support your answer.

Although the digestive system is primarily responsible for the breakdown of food, this process can be disrupted if the circulatory system malfunctions. The best explanation for this disruption is that:

Which two body systems provide humans with the raw materials necessary for their cells to release energy?

The diagram below illustrates the release of chemical A from a human cell in response to a specific stimulus.Which cell structure plays a direct role in the release of this chemical from the cell?

The diagram provides information about some of the digestive enzymes produced by the human pancreas.Another important molecule not shown in the diagram is also produced by the pancreas. It functions to decrease glucose levels in the blood. This molecule is:

Antibodies produced against one pathogen infecting the human body may not work against a different pathogen because antibodies are:

State whether the new drug used without the chemotherapy drug would enable the immune system to successfully attack the cancer cells. Support your answer.

Explain the role of white blood cells in the process of killing cancer cells.

It may be harmful when people compete to see who can hold their breath the longest under water. Without oxygen, brain cells:

Which statement is an example of a feedback mechanism in humans?

Many disorders are due to the inability of an individual to break down a particular chemical. Sometimes these disorders can be treated by giving the affected individual the appropriate:

The student stated that data from his experiment supported his claim that pulse rate increases when watching an exciting sporting event. State an argument for why someone might not accept his claim.

Changes in external temperatures often result in a person either sweating or shivering, as represented in the diagram below.These responses are one way:

At which hour were the lights turned on in the lab?

During the 8 hours studied, the plant performed:

*Complete question 19 on a separate sheet of paper*Make sure to show your work

*Complete question 20 on a separate sheet of paper*Make sure to show your work

The structures most directly involved in the synthesis of cellular proteins are the:

The diagram below represents changes that take place within the human body.The diagram represents:

Blood sugar levels increase after a meal and eventually return to normal. This is represented in the diagram below.

This constant correcting of blood sugar levels within the body is accomplished by

The diagram below illustrates the release of chemical A from a human cell in response to a specific stimulus.

Which cell structure plays a direct role in the release of this chemical from the cell?

The diagram provides information about some of the digestive enzymes produced by the human pancreas.

Another important molecule not shown in the diagram is also produced by the pancreas. It functions to decrease glucose levels in the blood. This molecule is:

The student stated that data from his experiment supported his claim that pulse rate increases when watching an exciting sporting event.

State an argument for why someone might not accept his claim.

Changes in external temperatures often result in a person either sweating or shivering, as represented in the diagram below.

These responses are one way:

Complete question 19 on a separate sheet of paper
Make sure to show your work

Complete question 20 on a separate sheet of paper
Make sure to show your work

The diagram below represents changes that take place within the human body.

The diagram represents: