Refer to the metabolic pathway illustrated above. if a, b, and c are all required for growth, a strain that is mutant for the gene-encoding enzyme a would be able to grow on medium supplemented with

Question:

A---enzyme A>Benzyme B>C

Refer to the metabolic pathway illustrated above. If A, B, and C are all required for growth, a strain that is mutant for the gene-encoding enzyme A would be able to grow on medium supplemented with .

A) nutrient A only

B) nutrient B only

C) nutrient C only

D) nutrients A and C

B) nutrient B only

Explanation:

The mutant has a mutation in the gene that codes for the enzyme A. Therefore, this mutant would not be able to convert the substance A into B. Without the presence of substance B, the final product can not be formed. However, if the mutant is supplemented with the substrate "B", it can convert the B into the final product (substance C). Therefore, the mutant would be able to grow in the medium to which the already prepared substance B has been added.

condensation. good luck!

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