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A series of mutations in a biosynthetic pathway of Salmonella result in the requ

ID: 41148 • Letter: A

Question

A series of mutations in a biosynthetic pathway of Salmonella result in the requirement of supplements to allow growth (+) as shown in the following table. What is the correct order for this synthesis pathway?

K ? X ? R ? M

R ? M ? K ? X

K ? M ? R ? X

R ? M ? X ? K

X ? K ? M ? R

Using the information in question 1; which of the following steps is regulated by the enzyme that is defective in Mutant 2?

R ? M

X ? K

K ? M

M ? R

M ? X

K ? R

M ? K

R ? X

a.)

K ? X ? R ? M

b.)

R ? M ? K ? X

c.)

K ? M ? R ? X

d).

R ? M ? X ? K

e).

X ? K ? M ? R

Explanation / Answer

K ? M ? R ? X

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