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Cellular Respiration
Test Description: Part 1 of Metabolic Processes Review
Instructions: Answer all questions to get your test result.
1) 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 used in active transport
C
It is used to synthesize NADH.
D
It is lost as heat and an increase in entropy.
2) In glycolysis, glucose must be first activated. Which of the following does this require?
A
2 molecules of NAD
B
2 molecules of ATP
C
2 molecules of O2
D
2 molecules of H2O
3) 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
4) Which of the following is a product of lactate fermentation?
A
CO2
B
acetaldehyde
C
NAD+
D
ethanol
5) 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
NADH
D
ATP
6) 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
NAD+
C
ATP
D
H2O
7) 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
substrate-level phosphorylation
B
chemiosmosis
C
enzyme activation
D
feedback inhibition
8) 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
9) During cellular respiration, the oxygen we inhale ends up in the carbon dioxide we exhale.
A
False
B
True
10) In oxidative phosphorylation, 2 NADH and 1 FADH2 theoretically produce 8 ATP.
A
True
B
False
*select an answer for all questions
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