SOLVED

101) The process by which molecules such as glucose are moved into cells along their concentration gradient with the help of membrane-bound carrier proteins is called A) osmosis. B) facilitated diffusion. C) active transport. D) endocytosis. E) exocytosis. 102) Facilitated diffusion differs from ordinary diffusion in that A) facilitated diffusion consumes no ATP. B) facilitated diffusion moves molecules from an area of higher concentration to lower concentration. C) the rate of molecular movement is limited by the number of available carrier molecules. D) facilitated diffusion never eliminates the concentration gradient. E) the rate of molecular movement is not limited by the number of available carrier molecules. 103) All of the following membrane transport mechanisms are passive processes, except A) diffusion. B) facilitated diffusion. C) vesicular transport. D) osmosis. E) movement of water. 104) A process that requires cellular energy to move a substance against its concentration gradient is called A) active transport. B) passive transport. C) facilitated transport. D) osmosis. E) diffusion. 105) The intake of small membrane vesicles from the extracellular fluid is called A) osmosis. B) active transport. C) facilitated transport. D) endocytosis. E) an ion exchange pump. 106) Two types of vesicular transport include A) endocytosis and retrocytosis. B) endocytosis and exocytosis. C) exocytosis and retrocytosis. D) pinocytosis and active transport. E) passive diffusion and active diffusion. 107) The principal cations in our body fluids are ________ and ________. A) sodium; potassium B) calcium; magnesium C) sodium; calcium D) chloride; bicarbonate E) sodium; chloride 108) In order to maintain cellular homeostasis, an exchange pump ejects ________ ions from the cell and imports ________ ions. A) potassium; calcium B) sodium; calcium C) potassium; sodium D) sodium; potassium E) calcium; sodium 109) Endocytosis is A) a method for transporting substances into the cell. B) a method for metabolizing within the cytosol. C) a form of anabolism. D) a viral infection. E) a method for packaging secretions. 110) A defense cell engulfing a bacterium illustrates A) pinocytosis. B) endocytosis. C) exocytosis. D) phagocytosis. E) receptor-mediated endocytosis.