For each of the following statements about anaerobic metabolism, respond \"True\

Question

For each of the following statements about anaerobic metabolism, respond "True" or "False".
Select all that are True.
1) In fermentation the terminal electron acceptor is an organic compound.
2) For a bacterium to use anaerobic respiration it must have a supply of some oxidized mineral such as: nitrate or sulfate.
3) In ethanol fermentation the terminal electron acceptor is an inorganic compound.
4) The terminal electron acceptor in anaerobic respiration is a reducing reagent.
5) In lactic acid fermentation the terminal electron acceptor is pyruvate.

Explanation / Answer

1. In fermentation the terminal electron acceptor is an organic compound.

TRUE:

The final acceptor for its electrons during fermentation is a derivative of pyruvate, such as acetaldehyde during alcohol fermentation, or pyruvate itself during lactic acid fermentation

2. For a bacterium to use anaerobic respiration it must have a supply of some oxidized mineral such as: nitrate or sulfate.

TRUE

3. In ethanol fermentation the terminal electron acceptor is an inorganic compound.

FALSE

4. The terminal electron acceptor in anaerobic respiration is a reducing reagent.

TRUE

In anaerobic respiration, the final electron acceptor may be an such as nitrate, ferric iron, sulfate, or carbonate

5. In lactic acid fermentation the terminal electron acceptor is pyruvate.

TRUE

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