Ch. 7 Part 2- Cell Transport
Quiz by Kate Downey
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75 questions
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- Q1The movement of molecules from an area of higher concentration to an area of lower concentration is calledosmosisactive transportendocytosisdiffusion30s
- Q2In osmosis, water always moves towards the _______ solution, that is, toward the solution with the _____ solute concentration.hypertonic…lesserhypertonic…greaterhypotonic…greaterisotonic….greater30s
- Q3Facilitated diffusion uses energy.TrueFalse30s
- Q4Diffusion of water across a selectively permeable membrane is calledactive transportdiffusionosmosispassive transport30s
- Q5A plant cell is placed in a solution whose solute concentration is twice as great as the concentration of the cell cytoplasm. The cell membrane is selectively permeable, allowing water but not the solutes to pass through. What will happen to the cell?No changeThe cell will shrivel because of active transport of water.The cell will shrivel because of osmosis.The cell will swell because of osmosis.30s
- Q6Red blood cells have a salt content of 0.9%. When a microbiologist places red blood cells in pure water, osmosis occurs. What net movement of a substance occurs in this instance of osmosis?water molecules move out of the cellssalt ions move out of the cells.water molecules move into the cells.salt ions move into the cells.30s
- Q7The movement of water across a selectively permeable membrane is known asphagocytosisendocytosisexocytosisosmosis30s
- Q8A substance that moves across a cell membrane without using the cell’s energy tends to moveoward the area where it is more concentratedaway from the area where it is more concentratedaway from the area of equilibriumaway from the area where it is less concentrated30s
- Q9Which of the following is an example of ACTIVE TRANSPORT?osmosisdiffusionfacilitated diffusionnone of the above30s
- Q10Osmosis uses energy.Falsetrue30s
- Q11Which of the following would diffuse through a cell membrane the most easily?a large polar moleculea large nonpolar moleculea small nonpolar moleculea small polar molecule30s
- Q12A nursing infant is able to obtain disease-fighting antibodies, which are large protein molecules, from its mother’s milk. These molecules probably enter the cells lining the baby’s digestive tract viaosmosisexocytosisendocytosisdiffusion30s
- Q13A freshwater paramecium is placed in salt water. Which of the following events would most likely occur? (Ask yourself where the water in the paramecium is going!!)swelling of the cell until it burstsshriveling of the cellan increase in the action of its contractile vacuoleswelling of the cell until it becomes turgid30s
- Q14The molecules responsible for membrane transport areLipidsCarbohydratesSteroidsProteins30s
- Q15In lab, you use a special balloon that is permeable to water but not sucrose to make an “artificial cell.” The balloon is filled with a solution of 20% sucrose and 80% water and is dropped in a beaker containing a solution of 40% sucrose and 60% water. Which of the following will occur?Water will enter the balloonSucrose will enter the balloonSucrose will leave the balloonWater will leave the balloon30s