Yeast cells with defective mitochondria are incapable of cellular respiration.Catabolism of which of the following energy sources would allow these to grow?
A)glucose
B)proteins
C)fatty acids
D)pyruvate

Question

Quizplus · Accepted Answer

Yeast cells with defective mitochondria are incapable of cellular respiration, which usually involves the breakdown of glucose to produce ATP. However, they can still rely on glycolysis, which occurs in the cytoplasm and does not require mitochondria. Glycolysis breaks down glucose into pyruvate and produces a small amount of ATP, which can be used to support growth and survival of the yeast cells. In contrast, proteins and fatty acids require functional mitochondria for their complete catabolism, while pyruvate is already a product of glucose breakdown and cannot be broken down further without mitochondrial involvement.

Yeast Cells with Defective Mitochondria Are Incapable of Cellular Respiration