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.
Answer: c
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