A biologist who says that the human body might be getting its power from "bacteria," is referring to
A)some cells that utilize bacteria to produce energy.
B)bacteria in our intestinal tract that digest food to supply us with energy.
C)the mitochondria in our cells that may have originated as endosymbiotic bacteria.
D)the E.coli throughout the human body that produce ATP.
E)photoautotrophic bacteria that, like plants, can produce carbohydrates from sunlight and carbon dioxide.

Question

Quizplus · Accepted Answer

Mitochondria are believed to have originated from endosymbiotic bacteria that were engulfed by early eukaryotic cells. These bacteria formed a mutually beneficial relationship with the host cell and eventually evolved into the mitochondria that provide energy to our cells through aerobic respiration. Thus, in a sense, our cells are powered by the bacteria that became our mitochondria.

A Biologist Who Says That the Human Body Might Be