Cellular Respiration: Question Preview (ID: 7597)

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The complete oxidation of glucose to CO2 and water releases -2870kJ/mol glucose. Aerobic respiration captures about 930kJ of this energy. What happens to the rest of it?
a) It is used for the chemiosmotic pumping of protons.
b) It is lost as heat and an increase in entropy.
c) It is used to synthesize NADH.
d) It is used in active transport

In glycolysis, glucose must be first activated. Which of the following does this require?
a) 2 molecules of O2
b) 2 molecules of H2O
c) 2 molecules of ATP
d) 2 molecules of NAD

Why is anaerobic respiration less efficient than aerobic respiration?
a) Fewer molecules of ATP are produced per glucose processed.
b) Glucose is not completely oxidezed to CO2 and H2)
c) The electron transport system is not used.
d) Al of the above

Which of the following is a product of lactate fermentation?
a) acetaldehyde
b) NAD+
c) ethanol
d) CO2

When the supply of acetyl-CoA exceeds the demand for energy, some of the acetyl-CoA can be diverted toward the synthesis of which one of the following?
a) ethanol
b) fatty acids
c) ATP

Cyanide poisoning occurs because it binds cytochrome oxidase, preventing it from transferring electrons to the final electron acceptor in the ETC. What is that acceptor?
a) O2
b) ATP
c) NAD+
d) H2O

If the ATP level of a cell becomes too high, ATP can bind to phosphofructokinase and block the formation of fructore 1,6-biphosphate. This is an example of:
a) chemiosmosis
b) substrate-level phosphorylation
c) feedback inhibition
d) enzyme activation

Which of the following is associated with increased levels of aerobic fitness?
a) a low VO2 max
b) a high VO2 max
c) a high lactate threshold
d) a high VO2 max and a low lactate threshold

During cellular respiration, the oxygen we inhale ends up in the carbon dioxide we exhale.
a) True
b) False

In oxidative phosphorylation, 2 NADH and 1 FADH2 theoretically produce 8 ATP.
a) True
b) False

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