Practice Quiz Cell Membranes.pdf

Question 1 Cells such as bacteria are taken up by other cells such as immune cells by which process? receptor-mediated endocytosis phagocytosis pinocytosis Exocytosis Question 2 Celery stalks that are immersed in fresh water for several hours become stiff and hard. Similar stalks left in a sa...

Question 1 Cells such as bacteria are taken up by other cells such as immune cells by which process? receptor-mediated endocytosis phagocytosis pinocytosis Exocytosis Question 2 Celery stalks that are immersed in fresh water for several hours become stiff and hard. Similar stalks left in a salt solution become limp and soft. From this we can deduce that the cells of the celery stalks are hypertonic to both fresh water and the salt solution. hypotonic to both freshwater and the salt solution. hypotonic to fresh water but hypertonic to the salt solution. hypertonic to fresh water but hypotonic to the salt solution. Question 3 Which of the following membrane activities require energy from ATP hydrolysis? facilitated diffusion movement of water into a cell movement of glucose molecules Na+ ions moving out of the cell Question 4 Which of these often serve as receptors or cell recognition molecules on cell surfaces? integral proteins peripheral proteins transmembrane proteins Glycoproteins Question 5 Which of the following statements correctly describes the normal tonicity conditions for typical plant and animal cells? The animal cell is in an isotonic solution, and the plant cell is in a hypotonic solution. The animal cell is in an isotonic solution, and the plant cell is in a hypertonic solution. The animal cell is in a hypertonic solution, and the plant cell is in an isotonic solution. The animal cell is in a hypotonic solution, and the plant cell is in an isotonic solution. Question 6 What are the membrane structures that function in active transport? carbohydrates cytoskeleton filaments integral proteins peripheral proteins Question 7 You are observing a newly discovered form of protist, and you see an organelle suddenly decrease in volume. What has happened? The cell was bursting. The cell was dying. The cell was releasing water by endocytosis. The cell was counteracting osmosis through the use of a contractile vacuole. Question 8 Which of the following processes includes all others? diffusion of a solute across a membrane transport of an ion down its electrochemical gradient osmosis passive transport Question 9 A patient has had a serious accident and lost a lot of blood. In an attempt to replenish body fluids, distilled water, equal to the volume of blood lost, is transferred directly into one of his veins. What will be the most probable result of this transfusion? The patient's red blood cells will shrivel up because the blood fluid is hypotonic compared to the cells. The patient's red blood cells will swell because the blood fluid is hypotonic compared to the cells. The patient's red blood cells will shrivel up because the blood fluid is hypertonic compared to the cells. The patient's red blood cells will burst because the blood fluid is hypertonic compared to the cells. Question 10 When a plant cell, such as one from a peony stem, is submerged in a very hypotonic solution, what is likely to occur? the cell will burst the cell membrane will lyse the cell will become turgid the cell will become flaccid