Once a macrophage ingests a foreign antigen,

the antigen is presented in which of the
following manners?



a. embedded directly in the cell membrane of
the macrophage
b. embedded in the membrane of a transport
vesicle and released via exocytosis
c. attached to a receptor protein, forming a
receptor-antigen complex
d. attached to MHC, forming a MHC-antigen
complex
e. none of these


D

Biology & Microbiology

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Phenotypes:

A. can be subject to environmental conditions. B. only result from gene transcription. C. are invariant. D. result solely from the actions of a single gene. E. None of the answer options is correct.

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A hydrogen bond between the side groups (R groups) of two different monomer subunits in a single

strand of a protein would be considered part of the ____ structure of the protein.

a. primary b. secondary c. tertiary d. quaternary e. linear

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Which of the following substances would be unlikely to function as a coenzyme?

a. a water-soluble vitamin b. a fat soluble vitamin c. glucose d. NAD+ e. FAD

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The formation of a cyst enables a protozoan to

a. move b. synthesise protein c. survive in the external environment d. increase rapidly in number

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