Course

Introductory Biology

Study Pack

Set 6 Lifes Mainspring An Introduction To Energy

Back to Sets
Question 1

(Multiple Choice)

Free
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.

Answer

Question 2

(Multiple Choice)

Free
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

Answer

Question 3

(Multiple Choice)

Free
Which of the following is exergonic?

A) bringing glucose molecules together to form glycogen
B) plants producing glucose from CO2
C) bringing amino acids together to form proteins
D) cells breaking down glucose into CO2

Answer