Which of the following is the true statement about gaseous neurotransmitters?
a. They are contained in synaptic vesicles
b. They may transfer information from a postsynaptic neuron to a presynaptic neuron.
c. They interact with receptors embedded in neural membranes.
d. They are deactivated by enzymes in the synaptic gap.
b
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Which stage occurs around the third through eighth weeks of pregnancy?
A. gestation stage B. germinal stage C. embryonic stage D. fetal stage
In a recent study in Canada, heroin addicts who failed in methadone treatment were successful when prescribed _________
a. Buspirone b. Antabuse c. LAAM d. heroin
A statement that attempts to predict or account for a set of phenomena is called a(n) ___________
a. hypothesis b. axiom c. corollary d. theory
H1 and H0, taken together, cover the entire continuum with regard to possible effects of the independent variable
Indicate whether the statement is true or false