Microbiology - Microbial Metabolism

Exercise :: Microbial Metabolism - Section 1

  • Microbial Metabolism - Section 1
21. 

Which of the following does not produce oxygen as a product of photosynthesis?

A. Oak trees
B. Purple sulfur bacteria
C. Cyanobacteria
D. Phytoplankton

Answer: Option B

Explanation:

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22. 

When acetate is the sole source of carbon for some microorganisms, the cycle which is used, is called

A. pentose phosphate pathway
B. glycolyic pathway
C. glyoxylate pathway
D. oxaloacetate pathway

Answer: Option C

Explanation:

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23. 

Hexose monophosphate pathway is also known as

A. phosphogluconate pathway
B. oxaloacetate pathway
C. malate pathway
D. fumerate pathway

Answer: Option A

Explanation:

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24. 

If radioactive bicarbonate was supplied to bacterial cells, which were actively synthesizing fatty acids, it is expected to find the bulk of the radioactivity in

A. cellular bicarbonate
B. the fatty acids
C. the cytoplasmic membrane
D. nucleic acids

Answer: Option A

Explanation:

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25. 

Standard free energy change (ΔG) can be expressed as

A. ΔG° = -RTlnkeq
B. ΔG° = RTlnkeq
C. ΔG° = R/Tlnkeq
D. ΔG° = -RT/lnkeq

Answer: Option A

Explanation:

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