Yeast cells with defective mitochondria are incapable of cellular respiration. These cells will be able to grow by catabolizing which of the following carbon sources for energy?
A) glucose
B) proteins
C) fatty acids
D) pyruvate

Question

Quizplus · Accepted Answer

Yeast cells with defective mitochondria are unable to perform cellular respiration, which is the primary source of energy for the cell. However, yeast cells can instead perform fermentation in the presence of glucose to generate ATP. Therefore, these cells will be able to grow by catabolizing glucose for energy. Proteins and fatty acids cannot be directly catabolized to generate ATP without going through cellular respiration, and pyruvate is a product of glucose catabolism, not a source of energy itself.

Yeast Cells with Defective Mitochondria Are Incapable of Cellular Respiration