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

Question

Quizplus · Accepted Answer

Pyruvate is typically converted to ethanol in yeast during anaerobic respiration, so a mutation preventing this conversion would inhibit the ability of the yeast to survive and grow anaerobically.

A Mutation in Yeast Makes It Unable to Convert Pyruvate