Which part of the digestive system assist in breaking down food into smaller molecules? a) mouth & teeth b) stomach c)small intestine d) all 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

The solution inside a plant cell is approximately a 1% saline solution and a 21% nacl solution the ,cytoplasm of a plant cell will

Which muscle cell structure stores calcium ions that are used to trigger the contraction?