Log inSign up for FREE
Library

SDAIE: DE_LivingEarth_2.1_Energy for Life

Last updated over 2 years ago
39 questions
Engage
Required
1
What do you need to run a race?Construct sentences left to right
Other Answer Choices:
I don't sleep or rest
A runner needs energy
to run a race.
Required
1
Construct sentences left to right
Other Answer Choices:
I would eat
a banana
I would drink
Required
2
Energy is the ability to do _______ or cause change; (it) can be _______ in chemicals found in food and released to the organism to do work
Required
2
Energy = the ability to do work = a force applied over some distance.
Energy = (F)(D) where the letter 'F' means _______ and the letter 'D' means _______
Required
1

Food contains energy.

Required
1

What type of energy is found in food?

Required
1
The energy found in food is released to your body through __________.
Required
2
Plants are _______ , which means they make their own energy. This process is called _______ .
Required
2
This is an example of a __________. It is made of many smaller __________
Required
7

Group the following macromolecules

  • glucose
  • starch
  • albumin
  • cholesterol
  • testosterone
  • glycogen
  • fructose
  • Carbohydrates
  • other organic molecules
Required
1
In cellular respiration, the complex chains of sugar molecules, glucose...are broken and the chemical energy is released to generate _______ .
Required
4
The __________ of photosynthesis are the __________ of respiration, and the __________ of respiration are the __________ of photosynthesis.
Required
1

From the video in Discovery Education...
Unit conversions: Which area shows an increase in meters by multiplying by 10 (x10)?

Required
1

From the video in Discovery Education...
Unit conversions: Which area shows units decreasing by dividing meters by 10 (/10)?

Required
1

From the video in Discovery Education...
match the following abbreviations with their correct length (unit)

  • dam
  • dm
  • cm
  • m
  • mm
  • km
  • hm
  • Kilometer
  • hectometer
  • dekameter
  • meter
  • decimeter
  • centimeter
  • millimeter
Explore #1: What Is Energy and How Does It Contribute to Maintaining Life on Earth?

Living Organisms and Energy

All living organisms require energy to perform essential cellular processes. Building larger molecules from smaller ones requires the input of energy; these larger molecules can also be used to store energy for later use. Moving molecules from low to high concentrations requires the input of energy. Without energy, none of the processes of life are possible.
Required
1

What do all living organisms require to perform essential cellular processes?

Required
1

What does it mean "Without energy, none of the process of life are possible"?...What processes can you think of?

Required
6
From Explore #1, paragraph #3: "Defining Energy"...
Energy cannot be created or destroyed, but it can be _______ into different forms. _______ energy is the energy of motion, thermal energy is _______ generated by the kinetic energy of atoms or molecules, and _______ energy is stored energy. Chemical potential energy, commonly called chemical energy, is a form of potential energy that is stored in chemical _______ . It is the _______ of energy among these forms that keeps living organisms alive.
Required
2

According to the video...
what are two examples of work shown? (select two examples)

Required
1

Which sentence defines the joule (J)?

Energy can be measured using a number of different techniques. Energy is defined as the ability to do work, and work is defined as the force used to move an object for a certain distance (work = force x distance). The standard unit of measurement for energy is the joule (J), which is defined as 1 newton of force used to move an object 1 meter; 1 joule = 1 newton*meter.
Required
1

Which sentence tells us how watts are used?

Energy can be measured using a number of different techniques. Energy is defined as the ability to do work, and work is defined as the force used to move an object for a certain distance (work = force x distance). The standard unit of measurement for energy is the joule (J), which is defined as 1 newton of force used to move an object 1 meter; 1 joule = 1 newton*meter.
A watt is defined as the use of 1 J/second. This measurement is often used to measure power expenditure in electrical equipment.
Required
1

Which sentence describes the most commonly used unit of energy in biology.

The energy in food is often measured in calories. A calorie (cal) is the amount of thermal energy needed to raise the temperature of 1 g of water by 1° C. The calories listed on food labels are kilocalories (1000 calories). On food labels, kilocalories are designated as Calories with a capital letter C.
Energy can also be measured in ergs, which are defined as the kinetic energy of 2 g moving at a velocity of 1 cm/sec. These measures of energy relate to each other with the following conversions:
1 cal=4.184 J1 J=0.239 cal1 erg=10−7 J1 cal=4.184 J1 J=0.239 cal1 erg=10−7 J
In biology, the calorie is the most commonly used unit of energy.
Explore #2: What are Kinetic and Potential Energy?
Required
3
Energy exists in a variety of forms of _______ and _______ energy. Kinetic energy is the energy any object has because it is _______ . Kinetic energy is defined as the work needed to move a body of a given mass to its final velocity, or speed in a given direction.
Required
2
Potential energy is the amount of energy that is _______ in an object; energy that an object has because of its _______ relative to other objects.
Required
1

Which sentences describes what thermal energy is?

Thermal energy is a term used to refer to heat generated by the kinetic energy of atoms and molecules. Atoms and molecules are in random constant motion. Temperature is a measure of this motion. Molecules moving more quickly have greater thermal energy than molecules moving more slowly.
Required
1

Which sentences describes what temperature is?

Thermal energy is a term used to refer to heat generated by the kinetic energy of atoms and molecules. Atoms and molecules are in random constant motion. Temperature is a measure of this motion. Molecules moving more quickly have greater thermal energy than molecules moving more slowly.
Required
1

Potential energy can exist in which of the following forms.

Chemical potential energy or chemical energy is the energy that is stored in the bonds between atoms. Chemical energy is released or absorbed during chemical reactions. When bonds are broken in chemical reactions, energy is absorbed. When bonds are made in a chemical reaction, energy is released. Organisms store energy as chemical energy. Food compounds, like glucose, starch, or fats, contain a lot of chemical energy in their molecules. When cells metabolize food during cellular respiration, they react these compounds in the presence of oxygen. This releases energy. Initially they may store some of the released energy as chemical energy in other “high energy” molecules. One of these molecules is adenosine triphosphate (ATP). This stored chemical energy is then readily available to do work within the cell. Chemical energy is required for all life processes.
Required
1

According to the first sentence, where is chemical energy stored?

Required
2

According to the second sentence, during chemical reactions, energy can be....

Required
2
According to the third sentence, when bonds are broken in chemical reactions, energy is __________. When bonds are made in a chemical reaction, energy is __________.
Required
1
A rollercoaster car moves from left to right as shown. The car starts out with high velocity as it is launched at the gate and no additional energy is provided during the part of the roller coaster shown. Determine whether the car is gaining or losing kinetic and potential energy at each part of the rollercoaster.
Other Answer Choices:
increases
decreases
Required
1
A rollercoaster car moves from left to right as shown. The car starts out with high velocity as it is launched at the gate and no additional energy is provided during the part of the roller coaster shown. Determine whether the car is gaining or losing kinetic and potential energy at each part of the rollercoaster.
Other Answer Choices:
increases
decreases
Explore #3 "What are the laws of thermodynamics"?
The first law of thermodynamics is related to the conservation of energy and is often called the Law of Conservation of Energy. The law states that energy cannot be created or destroyed. The total energy in the universe remains constant. Energy can, however, be transformed from one form into another.
Required
1

The first law of thermodynamics...what does that mean?...can you give me an example?

The second law of thermodynamics states that the entropy of a system cannot decrease. Entropy is the measure of disorder, or chaos, in a system. Systems increase in disorder until equilibrium is reached. This law of thermodynamics explains why energy cannot be transferred from a colder body to a hotter body and why energy conversions are never 100% efficient. Most of the energy taken in from food is lost as thermal energy. Only a small percent of the energy taken in is used to do work. This thermal energy is why people feel hot when exercising. The conversion of potential energy to kinetic energy releases a lot of thermal energy.
Required
1

Entropy is the measure of disorder. Which law of thermodynamics states this? What does this mean?

The third law of thermodynamics defines the point at which the thermal energy of molecules is zero. This point is called absolute zero and is defined as 0K (Kelvin); this occurs at -273°C. Absolute zero is the lowest possible temperature because atoms have ceased moving.
Required
1

The third law of thermodynamics defines the point at which the thermal energy of molecules is zero. What does this mean?

Explain #4: "What Is the Difference between Endergonic and Exergonic Reactions?"
Required
2
Reactions that take in energy from their surroundings are __________and reactions that release energy into their surroundings are __________
Explore #5: "What Is the Difference between Oxidation and Reduction Reactions?"
Required
1

Which sentence describes how energy is stored in a redox reaction.

Redox reactions are used to store and release energy in biological systems. Electrons can be moved from a lower energy state in one atom to a higher energy state in another atom; this serves to store energy. Electrons can also move from higher energy states in one atom to lower energy states in another, thus releasing energy.
Required
4
The term redox is a combination of the terms reduction and oxidation. Reduction is the __________ of electrons, which __________ the oxidation state of the atom or ion. In reduction, the __________ energy of electrons is __________; this stores energy.
Required
5
Oxidation is the __________ of electrons, which __________ the oxidation state of the atom or ion. In oxidation, the __________ energy of the electrons is __________, which __________ energy.