2. How is ATP used in most cell processes? a. It binds to a substrate and provid
ID: 87485 • Letter: 2
Question
2. How is ATP used in most cell processes?
a. It binds to a substrate and provides energy when the phosphate group is released.
b. indirectly, by providing electrons to an acceptor
c. Hydrolysis of ATP is coupled to an endergonic reaction.
d. It increases the efficiency of some key enzymes.
e. none of the above
2. How is ATP used in most cell processes?
a. It binds to a substrate and provides energy when the phosphate group is released.
b. indirectly, by providing electrons to an acceptor
c. Hydrolysis of ATP is coupled to an endergonic reaction.
d. It increases the efficiency of some key enzymes.
e. none of the above
2. Which of the following is NOT true about channel proteins?
a. Substances move along a concentration gradient.
b. They are integral membrane proteins.
c. Movement of substances is based on diffusion.
d. Energy is required to move substances through the channel protein.
e. Ions can move through channel proteins.
2. Which term would you associate with exchange diffusion?
a. osmosis
b. active transport
c. facilitated diffusion
d. passive transport
e. peripheral membrane protein
2. The high concentration of protons in the intermembrane space of mitochondria originates from
a. glycolysis.
b. pyruvate oxidation.
c. reactions in the electron transport chain.
d. synthesis of ATP.
e. all of the above.
2. Which of the following is NOT correct for rubisco?
a. It is the most abundant enzyme.
b. It catalyzes two different reactions.
c. It is involved in photorespiration.
d. It is not used by CAM plants.
e. It is not efficient in fixing CO2.
Explanation / Answer
2. How is ATP used in most cell processes?
Answer: c. Hydrolysis of ATP is coupled to an endergonic reaction.
Explanation: ATP is hyrolysed to released energy and this exergonic reaction is coupled to endergonic reactions.
2. Which of the following is NOT true about channel proteins?
Answer: d. Energy is required to move substances through the channel protein.
Explanation: Facilitated diffusion across channel proteins does not require energy.
2. Which term would you associate with exchange diffusion?
Answer: e. peripheral membrane protein
Explanation: There is a mole to mole exchange of solute in exchange diffusion, mediated by a carrier.
2. The high concentration of protons in the intermembrane space of mitochondria originates from
c. reactions in the electron transport chain.
Explanation: The intermembrane space of mitochondria carries out oxidative phosphorylation.
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