1) Plants provide animals with which of the following?

A) food

B) oxygen

C) carbon dioxide

D) food and oxygen

E) food and carbon dioxide

2) Which law of thermodynamics explains the fact that we must eat to gain the energy to perform the functions of life, such as breathing?

A) second law

B) fourth law

C) fifth law

D) first law

E) third law

3) Living things are highly ordered. So why does life not violate the second law of thermodynamics?

A) Life can only violate the first law of thermodynamics.

B) Life only needs to follow the first law of thermodynamics.

C) Life takes in energy to maintain order and, in doing so, decreases order elsewhere.

D) Life gives off energy to maintain order and, in doing so, decreases order elsewhere.

4) Which of the following has the most entropy?

A) steam

B) snow

C) an ice cube

D) hot water

E) liquid water

5) When we metabolize our food, we produce heat that helps to keep us warm. Which of the following best describes why?

A) Chewing is exothermic; therefore, energy is released in the form of heat when we eat food.

B) When we break down food, all energy in the food is directly released in the form of heat.

C) Producing ATP from ADP is exothermic; therefore, energy is released in the form of heat.

D) When we break down our food, the reactions are not 100 percent efficient; therefore, energy is lost as heat.

6) Entropy is the measure of ________ in a system.

A) energy

B) disorder

C) work

D) order

E) heat

7) When you digest the starch in plants into glucose, some energy is lost as heat. This increases the ________ of the universe.

A) energy

B) order

C) entropy

D) potential

E) equilibrium

8) Glucose can be broken down to provide energy for the beating of cilia. Therefore, the glucose must contain:

A) potential energy.

B) kinetic energy.

C) heat energy.

D) entropy.

9) Kinetic energy is ________ and potential energy is ________.

A) stored energy; energy that is being used

B) stored energy; energy that can’t be used

C) energy that can’t be used; stored energy

D) energy that is being used; stored energy

10) You work hard to pedal your bicycle up a steep hill. You rest when you get to the top, then you let your bicycle roll quickly down the other side of the hill. You converted ________ energy into ________ energy, then you converted it back into ________ energy.

A) potential; kinetic; potential

B) kinetic; potential; kinetic

C) heat; kinetic; heat

D) heat; potential; heat