Cnidarians, such as __________________, have muscle fibers

A. clams
B. earthworms
C. jelly fish
D. sea corals


C

Biology & Microbiology

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Which organelle completes protein modifications and packages the protein for export?

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This illustration shows

a. cytoplasmic division in a plant cell. b. cytokinesis via a contractile ring mechanism. c. how chromosomes are dragged to the poles. d. chromosome condensation. e. an animal cell in interphase.

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Which of the following immune system components has been identified in almost all multicellular

organisms? a. bone marrow b. phagocytes c. antimicrobial peptides d. T-cells e. memory cells

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People who wash their hands frequently during cold season typically have fewer colds than those who do not. This observation suggests cold viruses can be transmitted by

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Biology & Microbiology