During cellular respiration, cells obtain energy for performing work   i. energy-rich molecules of glucose are broken down in the cytoplasm, and atp is produced. ii. enzyme pathways in the mitochondria produce atp through the process of fermentation. iii. enzyme pathways in the mitochondria produce atp in a process that requires oxygen. a. i and iii only b. i, ii, and iii c. ii and iii only d. i and ii only

I and III only.

Explanation:

Cellular respiration may be defined as the process that converts the biochemical energy of the nutrients that are stored is converted into the ATP molecule. ATP is the energy currency of the cell.

The glucose molecule is broken down into the ATP. this process of glycolysis occurs in the cytoplasm of the cell. The electron transport chain that present in mitochondria produces ATP. This process occurs in the presence of oxygen. Fermentation process do not occur in mitochondria.

Thus, the correct answer is option (A).