Animals that obtain their body heat from internal metabolism are called:
a. ectotherms.
b. poikilotherms.
c. endotherms.
d. osmoconformers.
e. osmoregulators.
C
Biology & Microbiology
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M. catarrhalis can be described as a:
a. gram-positive diplococcus. b. gram-negative diplococcus. c. gram-negative coccobacillus. d. gram-negative bacillus.
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Antibody-mediated immunity is also called humoral immunity
a. True b. False
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In angiosperms, an unusual reproductive process involving two sperm cells occurs, called
A. self-pollination. B. germination. C. pollen tube formation. D. double fertilization.
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Capsomeres are protein subunits of the
A. Inner nucleus B. Outer cell membrane C. Outer capsid D. Inner core
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