Which of the following statements is true about the serotonin receptor family?
a. Most of the receptors are ionotropic
b. 5-HT1A receptors are located primarily in the cerebral cortex
c. 5-HT2A receptors cause inhibition by decreasing adenyl cyclase and increasing potassium efflux
d. The newer antipsychotics like Risperdal act by blocking the 5-HT2A receptor
e. LSD and similar hallucinogens are most likely agonists at the 5-HT1A receptor
Answer is d. The newer antipsychotics like Risperdal act by blocking the 5-HT2A receptor
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A type of transport of a solute across a membrane, up its concentration gradient, using protein carriers driven by the expenditure of chemical energy is known as
A. osmosis. B. diffusion. C. facilitated transport. D. active transport. E. exocytosis.
All members of the phylum Chordata share
a. a notochord present sometime in their lives. b. a vertebral column. c. gills present throughout their lives. d. tails present throughout their lives. e. exoskeletons.
Reduction involves the
A) loss of neutrons. B) gain of electrons. C) increase in oxidation state. D) gain of electrons and an increase in oxidation state. E) loss of neutrons, gain of electrons, and an increase in oxidation state.
How many chromosomes should be in a generative cell nucleus?
A) 8 B) 16 C) 24 D) 32