Question

what is the initial step of aerobic respiration?
fermentation
oxidative phosphorylation
glycolysis
citric acid cycle

Explanation:

Aerobic respiration has three main stages: glycolysis, the citric acid cycle, and oxidative phosphorylation. The initial step is glycolysis, where glucose is broken down into pyruvate. Fermentation is an anaerobic process, oxidative phosphorylation is the final stage, and the citric acid cycle comes after glycolysis.

Answer:

glycolysis