Muscle cells are not typical cells because
a. groups of them fuse in the embryo to form
multinucleated fibers.
b. they contain actin proteins.
c. they contain myosin proteins.
d. they respond to stimuli.
e. all of these are true
E
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Why is anal sex more apt to transfer HIV than vaginal sex? What will be an ideal response?
Host specificity of a certain virus is determined by
a. reproductive stage of the virus. b. presence of surface spores. c. receptors found on the host cell. d. none of the above.
Your brother asks you to bring him pomes. Which of the following would you give him?
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