The protein coat of a virus

A. is called a capsomere.
B. is called a capsid.
C. protects the nucleic acid.
D.
is involved in the recognition of host cell receptors by non-enveloped viruses.

E.
is called a capsid, protects the nucleic acid, AND is involved in the recognition of host cell receptors by non-enveloped viruses.


E

Biology & Microbiology

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Hormones travel in the bloodstream yet only certain cells respond. This specificity is due to the presence of _____ in the target cells

1.cell marker proteins 2.channel proteins 3.protein receptors 4.transport proteins

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In gram negative bacteria a pilus allows it to

A) attach to surfaces, aiding in the formation of biofilms. B) move using an "oarlike" motion. C) transfer genetic material. D) infect their host.

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Cholesterol functions in the plasma membrane to

A. serve as an energy molecule. B. maintain fluidity. C. maintain hypertension. D. mediate steroid action. E. transport ions.

Biology & Microbiology