According to the endosymbiont hypothesis, ____.
A) most of the genes from the endocytosed bacteria moved to the nucleus
B) the host anaerobe became dependent upon the endocytosed bacteria
C) the endocytosized bacteria became dependent on the host cell
D) all endocytosed bacteria were photosynthetic
E) most of the genes from the endocytosed bacteria moved to the nucleus, the host anaerobe became dependent upon the endocytosed bacteria, and the endocytosed bacteria became dependent on the host cell

Question

Quizplus · Accepted Answer

The endosymbiont hypothesis suggests that mitochondria and chloroplasts originated from bacteria that were taken up by a host cell. Over time, most of the genes from these endosymbiotic bacteria were transferred to the host cell's nucleus, making the bacteria dependent on the host for some functions. Conversely, the host cell became dependent on the bacteria for other functions, such as ATP production in the case of mitochondria and photosynthesis in the case of chloroplasts. This mutual dependency is a key aspect of the hypothesis.

According to the Endosymbiont Hypothesis, ____