1) Many species of bacteria are able to ferment sugars. This process: a. involve

Question

1) Many species of bacteria are able to ferment sugars. This process:

a. involves the reduction of organic compounds, which serve as terminal electron acceptors

b. involves the oxidation of NADH to NAD+

c. requires a fully functional electron transport chain so that a proton gradient can be generated to drive the synthesis of ATP

d. answers (a) and (b) are both correct

e. answers (a), (b), and (c) are all correct

2) Which of the following statements are true about metabolism of a carbon-containing substrate:

a. ADP is reduced to form ATP

b. NAD+ is reduced to form NADH

c. it is always completely oxidized to carbon dioxide

d. answers (a) and (b) are correct

e. answers (a), (b) and (c) are all correct

3) Chemoheterotrophs

a. use carbon dioxide as a carbon source

b. use organic compounds as a carbon source

c. use chemical compounds as an energy source

d. answers (a) and (c) are correct

e. answers (b) and (c) are correct

4) As part of metabolism ATP is formed

a. only by substrate level phosphorylation

b. by both substrate level phosphorylation and oxidative phosphorylation

c. during anabolism

d. none of the above 5

Explanation / Answer

1) Many species of bacteria are able to ferment sugars. This process:
The answers are d. answers (a) and (b) are both correct.

a. involves the reduction of organic compounds, which serve as terminal electron acceptors
b. involves the oxidation of NADH to NAD+

Electron transport chain is a part of aerobic respiration.

2) Which of the following statements are true about metabolism of a carbon-containing substrate:
The answers are e. answers (a), (b) and (c) are all correct

3) Chemoheterotrophs
The answers are e. answers (b) and (c) are correct

4) As part of metabolism ATP is formed
The answers are b. by both substrate level phosphorylation and oxidative phosphorylation

During anabolism the atps will be consumed.

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