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) be unable to metabolize glucose
D) die because they cannot regenerate NAD+ from NAD
E) metabolize only fatty acids

Question

Quizplus · Accepted Answer

Pyruvate is normally converted to ethanol in yeast during anaerobic respiration. Without this ability, the mutant yeast cells will not be able to carry out anaerobic respiration, and will therefore be unable to grow anaerobically.

A Mutation in Yeast Makes It Unable to Convert Pyruvate