what differences are there between the meiotic divisions in a developing sperm and those in a developing ovum

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food

Which of th following best describes how genes produce traits in an organism?