AP Biology (Mader), 11th Edition

Chapter 6: Metabolism: Energy and Enzymes

Pre-Test

1
Which of the following is an example of potential energy?
A)A big piece of chocolate cake
B)Someone running a marathon
C)A fish swimming upstream
D)A leaf unfolding
2
Which of the following statements about energy is FALSE?
A)Energy can't be created and it can't be destroyed.
B)Chemical energy in our food can be transformed into energy needed for muscle contractions.
C)When energy is transformed, all of it is available to do work.
D)A battery you just bought at the store has potential energy.
3
Reactions which require an input of energy ___________.
A)are exergonic
B)are endergonic
C)will never occur
4
In the reaction A + B --> C + D, the reactant(s) is/are ______________.
A)only A
B)A and B
C)only D
D)C + D
5
Enzymes _____.
A)slow down chemical reactions
B)increase the energy of activation
C)bring together specific molecules and causes them to react with each other
D)are altered during the course of a reaction
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