The anaerobic reactions of cellular respiration occur in the , whereas the aerobic reactions of cellular respiration occur in the

Cytosol; Mitochondria

Explanation:

Anaerobic reactions occurs in the ABSENCE OF OXYGEN ONLY, and involves the breakdown of sugar molecules into lactate and occurs in the CYTOSOL of activel skeletal muscles during movement

In contrast, aerobic reactions of respiration are reactions that occurs in the presence of oxygen ONLY, and involves the breakdown of sugar molecules into carbon dioxide, water and energy (in form of ATP). It occurs within the inner membrane of the mitochondria.

1. is geographic distribution

2 is increasing complexity

3 is transitional forms