Enzymes in the __________ are important in the metabolization of drugs

Don tells Ray he wants to get a new sports car. Ray immediately understands why, because he is familiar with the common characteristics of sports cars and knows what makes them different from family cars

Ray is using mental categories called __________ a) classes. b) concepts. c) attributes. d) classifications.

Current evidence on age-related changes in levels of testosterone in men indicates that _______

a. there is a large and steady decline beginning at about age 40 b. there is a large decline, but it begins only after about age 60 c. there is no decline at all d. there is a small and gradual decline from midlife onward