This hormone binds to a plasma membrane
receptor and has its effect by way of a second
messenger. This hormone is
a. aldosterone.
b. calcitonin.
c. progesterone.
d. cortisol.
e. more than one of these
B
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Which of the following are cnidarians?
A. sponges and jellyfish B. jellyfish and sea anemones C. sea anemones and mollusks D. mollusks and sponges
Individual beak size of individual finches of the Galápagos Islands
A) may change during a bird's lifetime. B) will always match the beak size useful for seed foraging. C) has nothing to do with overall population characteristics. D) will greatly influence individual survival.
Gram-negative nitrogen-fixing bacteria found in association with plant roots are
A) alphaproteobacteria. B) betaproteobacteria. C) cyanobacteria. D) gammaproteobacteria. E) deeply branching bacteria.
In high intensity activity, what compound is used to restore ATP?
What will be an ideal response?