An organism does not have mitochondria. Which statement explains the organism's energy breakdown?

a. The organism goes through fermentation.

b. The organism goes through aerobic cellular respiration.

c. The organism undergoes only stage 2 of cellular respiration.

d. The organism uses oxygen to make large amounts of energy.

a. The organism goes through fermentation.

Explanation:

If the organism does not have mitochondria, it won't be able to go through cellular respiration (requires oxygen). This is due to the electron transport chain (last part of aerobic cellular respiration) is carried in mitochondrial inner membranes. Therefore, options b, c, and d are wrong.

The right answer is option a. Fermentation is carried by prokaryotes than don't have inner membranes, so they don't have organelles, therefore, they don't have mitochondria.