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.

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.