A mutation in yeast makes it unable to convert pyruvate to ethanol. How will this mutation affect these yeast cells? The mutant yeast cells will
A) be unable to grow anaerobically.
B) grow anaerobically only when given glucose.
C) metabolize only fatty acids.
D) die because they cannot regenerate NAD+ from NAD.
E) be unable to metabolize glucose.

Question

Quizplus · Accepted Answer

Pyruvate is converted to ethanol during anaerobic respiration in yeast. Therefore, if this conversion is blocked due to the mutation, the yeast cells will be unable to grow anaerobically.

A Mutation in Yeast Makes It Unable to Convert Pyruvate