Raymond has a mother who is a carrier of the disease PKU, and a father who is also the carrier. What are Raymond’s chances of actually having the disease?

An existentialist therapist would view unhealthy anxiety as

a. a loss of meaning in one's life. b. a raging conflict among the id, ego, and superego. c. the effects of learning and conditioning. d. the result of distorted thinking.

One substance that body cells require for energy production is:

a. sodium b. glucose c. insulin d. serotonin