DNA contains an organism's genetic material, organized into sequences called:
a. genes.
b. chromosomes.
c. gametes.
d. nuclei.
e. sperm and egg cells.
A
Biology & Microbiology
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Plasma cells come from
a. T cells. b. dendritic cells. c. B cells. d. macrophages. e. monocytes.
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The study of behavior in natural environments from an evolutionary perspective is called:a
ethology. b. animal behavior. c. behavioral ecology. d. behavioral ethology. e. direct fitness.
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Superoxide ion is toxic to strict anaerobes because they lack
a. catalase b. peroxidase c. dismutase d. oxidase
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