Inactivation of a cell-surface receptor depends on:

A. the binding affinity of the receptor.
B. the activity of phosphatases in the cytosol.
C. the concentration of ligand surrounding the
cell.
D. both the binding affinity of the receptor and
concentration of ligand surrounding the cell.


D

Biology & Microbiology

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Fill in the blank(s) with the appropriate word(s).

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During parturition, mechanical pressure caused by the movement of the fetus through the uterus causes the release of

____ from the ____.

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Individual initially encounters an immunogen

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