The word that best describes the interaction of sympathetic and parasympathetic systems is:

a. antagonistic
b. cooperative
c. overriding
d. agonistic
e. ineffective


a

Biology & Microbiology

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With the exception of some gram-positive cocci, what concentration of NaCl inhibits nearly

A) 2.5% B) 5% C) 7.5% D) 10%

Biology & Microbiology

Despite selection against chromosomal variations,

A) related species almost always have the same karyo type. B) related species almost always have different karyo types. C) closely related species diverge by many chromosomal rearrangements. D) distantly related species diverge by only a few chromosomal rearrangements.

Biology & Microbiology

Which populations recovered first from the fire (i.e., within the first year or two), and in what order?

a. first prairie dogs, then antelope, then grasses b. first grasses, then prairie dogs, then antelope c. first grasses, then antelope, then prairie dogs d. first antelope, then grasses, then prairie dogs

Biology & Microbiology

Blood calcium level is regulated in part by _________ a hormone secreted by the thyroid gland when the blood calcium level rises.

A) serotonin. B) parathyroid. C) calcitonin. D) estrogen.

Biology & Microbiology