Asexual reproduction occurs during _____
A) meiosis
B) mitosis
C) fertilization
D) chromosome exchange between organisms of different species
Answer: B
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Darwin's ideas on evolution were advanced for his time. His approach to science and natural selection were supported by what main tenet?
A. Species were unchangeable over the course of time. B. Operation of natural laws produces constant change and improvement. C. Various organisms and their structures resulted from a spontaneous action. D. The world is fixed and constant.
The electron transport system is a series of ________ reactions
Fill in the blank(s) with the appropriate word(s).
Shigellosis can be differentiated from salmonellosis by the fact that Shigella
A) stimulates intestinal epithelial cells to phagocytize it. B) multiplies in phagocytic vesicles. C) kills host cells. D) multiplies in the host cell's cytosol. E) causes severe diarrhea, abdominal cramps, and fever.
There is strong evidence that archaic Homo sapiens migrated to the Americas.
a. true b. false