Microbiology - Enzyme Reaction

Exercise :: Enzyme Reaction - Section 1

  • Enzyme Reaction - Section 1
11. 

In the reaction, C6H12O6+ 6O2 → 6CO2 + 6H2O + energy, which component is being oxidized?

A. C6H12O6
B. O2
C. CO2
D. H2O

Answer: Option A

Explanation:

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12. 

The fact that β-oxidation of fatty acids, occurs in the mitochondria whereas fatty acid synthesis occurs in the cytoplasmic matrix, is an example of regulation of enzymatic activity by the __________ mechanism.

A. compartmentation
B. induction
C. competitive inhibition
D. repression

Answer: Option D

Explanation:

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13. 

In the reaction, C6H12O6 + 6O2 → 6CO2 + 6H2O + energy, which component is being reduced?

A. O2
B. CO2
C. H2O
D. Energy

Answer: Option A

Explanation:

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14. 

The affinity of an enzyme for its substrate, when the enzyme has a Km of 0.50 M will be __________ than the affinity of an enzyme for its substrate when the enzyme has a Km of 0.05 M.

A. greater
B. lesser
C. approximately equal
D. half

Answer: Option B

Explanation:

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15. 

Anthranilate synthase, the first enzyme of tryptophan biosynthesis after the branch point shows feedback inhibition and repression due to

A. L-tryptophan
B. D-L-tryptophan hydantoin
C. L-serine
D. pyruvate

Answer: Option A

Explanation:

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