Expressive behaviors are those that

Although the male ejaculate contains hundreds of millions of sperm, ________.

a) most do not reach the oocyte b) most are destroyed by the alkaline environment of the uterus c) it takes millions to penetrate the outer layers of the oocyte d) most are destroyed by capacitation

During the fasting phase, most of the energy used by muscles is derived from

A) glucose. B) free fatty acids released from adipose tissue. C) glycogen. D) amino acids. E) ketones.