Clark Hull's theory of motivation rests on the idea of _____, which is the body's need for balance

. Endorphins are _____

A) found where neurons meet skeletal muscles B) less powerful than enkaphalins C) pain-reducing neurotransmitters D) radically different in function from neurotransmitters

The term used to describe the entire arrangement of all human genes is:

a. the human genome b. the chromosome complex c. the natural selection of genetics d. the DNA code