________ are small peptide molecules (10—50 amino acids in length) that affect membrane permeability.

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


Antimicrobial peptides, or AMPs

Biology & Microbiology

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Which of the following directly cause the

brain’s “thermostat” to raise the body’s internal temperature set point?

a. cytokines b. histamines c. prostaglandins d. histamines and prostaglandins e. complement proteins

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Contraction of the diaphragm allows for expiration

a. true b. false

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Phospholipids contain ____________________ tails that are repelled by water. Fill in the blank(s) with the appropriate word(s)

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Active transport is like facilitated diffusion in that both processes

A) move molecules down their concentration gradient. B) require the presence of proteins in the plasma membrane that move molecules from one side of the plasma membrane to the other. C) require the conversion of ADP to ATP. D) do not require a source of energy. E) facilitate the movement of water through the phospholipids of the plasma membrane.

Biology & Microbiology