Question

Which of the follow is least likely to occur in a muscle fiber that is metabolizing anaerobically?

a) fermentation of glucose to lactic acid
b) phosphorylation of ADP within the electron transport chain
c) depletion of stores of glycogen
d) acidification of the cytoplasm

Answer 1

In anaerobic muscle metabolism, the least likely event to occur is phosphorylation of ADP within the electron transport chain.

Step-by-step explanation:

In anaerobic muscle metabolism, the least likely event to occur is b) phosphorylation of ADP within the electron transport chain. Anaerobic metabolism, also known as glycolysis, occurs in the absence of oxygen and is an inefficient process for generating ATP. During glycolysis, glucose is broken down to produce ATP and lactic acid. The electron transport chain, which requires oxygen, is not involved in anaerobic metabolism.