The major psychoactive compound in marijuana, delta-9-THC, has actions mediated by CB1 receptors. An endogenous ligand for this class of receptors is called

You are working with a clinical psychologist. He is showing you a series of pictures, and asking you to tell a story about each one. This test could be described as an ___________

a. a clinical checklist. b. a projective personality test. c. a structured clinical interview. d. an intelligence test.

Remembering that the Greek prefix epi- means "on top of" or "in addition to," which of the following is the correct definition of the term "epigenetics"?

a. The study of stable changes in the expression of a particular gene that occur without changes in DNA base sequences b. The study of ephemeral effects on genetic expression that do not affect DNA nor the environment c. The study of DNA over and above its effect on growth and development d. The study of DNA in larger, more complex species as well as single-cell organisms