The enzyme succinic semialdehyde reductase converts succinic semialdehyde to ____________.

If Theo is an 11-year-old boy, which of the following best typifies the "exotic becomes erotic" theory?

A) "Boys are stupid, because all they want to do is play sports." B) "Girls are really gross, because they like to kiss and hug." C) "I used to think 'girls stink', but I don't think that now." D) "I used to like girls, but now I think they are annoying."

Based on information presented in your textbook on the relationship between similarity and attraction, which of the following sayings is most supported by research?

a. Opposites attract. b. Familiarity breeds contempt. c. Absence makes the heart grow fonder. d. Familiarity breeds liking.