*In anaerobic respiration, the final electron acceptor is a. oxygen b. ATP c. an

ID: 212579 • Letter: #

Question

*In anaerobic respiration, the final electron acceptor is

a. oxygen

b. ATP

c. an inorganic molecule other than oxygen

d. an organic molecule

* Which of the following is not a part of respiration?

a. a series of reactions in which pyruvate is oxidized to CO2 and H2

b. a sequence of carrier molecules with an organic compound as a terminal electron acceptor

c. the production of ATP

d. a sequence of carrier molecules with an inorganic compound as a terminal electron acceptor

e. Answers (a) and (b)

*Which of the following does not occur as part of the TCA (Krebs) cycle?

a. The production of CO2

b. The oxidation of NADH

c. The complete oxidation of pyruvate

d. A series of chemical reactions in which NADH is produced by the oxidation of pyruvate

1. The answer is: c. an inorganic molecule other than oxygen.

In anaerobic respiration, the terminal electron acceptor can be any inorganic molecule like sulfur, nitrate etc.

2. The answer is: e. Answers (a) and (b)

Pyruvate is oxidized to form acetyl Co a and carbon dioxide, hydrogen is not produced.

The terminal electron acceptor is always inorganic.

3. The answer is: b. The oxidation of NADH

In TCA cycle, NADH is formed from NAD, so reduction of NAD takes place.

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