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kimmykgirl19 kimmykgirl19
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7 years ago
In contrast to a G protein-linked receptor and an enzyme-linked receptor, a channel-linked receptor:a.
   is located on the cell surface.
  b. is composed of seven alpha helices.
  c. couples signaling molecules to signal transduction pathways.
  d. is a ligand-gated channel.
  e. functions as a tyrosine kinase.

Question 2

As a result of receptor up-regulation:a.
   the number of genes that code for a receptor increases.
  b. the sensitivity of a cell to a hormone decreases.
  c. the number of receptors decreases.
  d. the concentration of hormone molecules in the blood increases.
  e. a hormone's signal is amplified
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ir_nizamir_nizam
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