1) Which of the following is an example of potential rather than kinetic energy?
A) water rushing over Niagara Falls
B) light flashes emitted by a firefly
C) a molecule of glucose
D) a crawling beetle foraging for food
C. a molecule of glucose
2) Anabolic pathways _____.
A) are usually highly spontaneous chemical reactions
B) consume energy to build up polymers from monomers
C) release energy as they degrade polymers to monomers
D) consume energy to decrease the entropy of the organism and its
B. consume energy to build up polymers from monomers
3) For living organisms, which of the following is an important consequence of the first law of thermodynamics?
A) The energy content of an organism is constant.
B) The organism ultimately must obtain all of the necessary energy for life from its environm
B. the organism ultimately must obtain all of the necessary energy for life from its environment
4) Which of the following is most similar in structure to ATP?
A) a pentose sugar
B) a DNA nucleotide
C) an RNA nucleotide
D) an amino acid with three phosphate groups attached
C. an RNA nucleotide
5) When chemical, transport, or mechanical work is done by an organism, what happens to the heat generated?
A) It is used to power yet more cellular work.
B) It is used to store energy as more ATP.
C) It is used to generate ADP from nucleotide precursors.
D. it is lost to the environment
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6) Which of the following is the most correct interpretation of the figure?
A) Energy from catabolism can be used directly for performing cellular work.
B) ADP + i are a set of molecules that store energy for catabolism.
C) ATP i
C. ATP is a molecule that acts as an intermediary to store energy for cellular work
7) Which of the following is true of enzymes?
A) Enzyme function is increased if the 3- D structure or conformation of an enzyme is altered.
B) Enzyme function is independent of physical and chemical environmental factors such as pH and temperature.
C) En
C. enzymes increase the rate of chemical reaction by lowering activation energy barriers
8) The active site of an enzyme is the region that _____.
A) binds allosteric regulators of the enzyme
B) is involved in the catalytic reaction of the enzyme
C) binds noncompetitive inhibitors of the enzyme
D) is inhibited by the presence of a coenzyme or
B. is involved in the catalytic reaction of the enzyme
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C