THC, the active ingredient in marijuana, alters
brain levels of
a. dopamine.
b. norepinephrine.
c. GABA.
d. serotonin.
e. all of these
E
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The largest unit within which gene flow can readily occur is _____
A) a population B) a species C) the entire range of a genus D) the hybrid zone E) the entire range of a phylum
Which of the following statements is true regarding lymph and the lymphatic system? Select all correct choices
A. Lymph is rich in proteins filtered out of the bloodstream. B. Lymph contains water filtered out of the bloodstream. C. The lymphatic system is composed solely of the same vessels and arteries forming the circulatory system. D. The lymphatic system is composed of its own distinct set of vessels, through which blood does not travel.
Under what condition might a human female have the XY sex chromosome complement?
A) The X chromosome has a mutation such that it is able to overpower the Y chromosome. B) The Y chromosome has an active Xist gene on it. C) This is not possible. D) This female would have one complete X chromosome and a Y chromosome that lacks SRY. E) She has an XX chromosome and a Y chromosome.
________ is a branch of chemistry that studies carbon compounds
Fill in the blank(s) with correct word