Cell Membranes & Transport Page 1 - Weebly

Cell Membranes & Transport1When the concentration of solutes differs on the two sides of a membrane permeable onlyto waterABCD2bulk flowosmosisfacilitated diffusionplasmolysisMovement of solutes across a plasma membrane requiring addition of energyABCD6active transportbulk flowosmosisfacilitated diffusionMovement of water out of a cell resulting in the collapse of the plasma membranesurrounding the central vacuole.ABCD5active transportbulk flowosmosisfacilitated diffusionMovement of water across a membrane from a region of higher concentration of water to aregion of low through aquoporinsABCD4water will move across the membrane by osmosiswater will move across the membrane by active transportwater will move across the membrane by plasmolysissolutes will move across the membrane from hyper- to hypotonic regionsMovement of solutes across a plasma membrane from a region of higher soluteconcentration to lower with the aid of proteinsABCD3Page 1bulk flowfacilitated diffusionactive transportplasmolysisThe movement of molecules during diffusion can be described by all of the followingEXCEPTABCDmolecular movements are randomnet movement of solute molecules is from a region of higher to lowerconcentrationeach molecule moves independently of other moleculessolute molecules always move down the concentration gradient12/4/2013 1:11:33 PM

Cell Membranes & Transport7Which of the following statements is true?ABCD8Which cell best eliminates wastes & obtains nutrients Why?Cell Surface AreaVolumeA150125B10050C61D200200ABCD9the water level in the tube will rise to a level above he water in the beakerthe water level in the tube will drop to a level below the beakerthere will be no change in the water level of the tube & the water willremain purethere will be no change in the water level of the tube, but sucrose will mix inCell A due to a high surface areaCell B due to moderate surface area & volumeCell C due to high surface area to volume ratioCell D due to identical surface area & volumeWhich of the following cells will be able to eliminate wastes and obtain nutrients moreefficiently & why?ABCDCell A due to its high surface areaCell B due to its moderate surface area & volumeCell C due to its high surface area to volume ratioCell D due to its identical surface area & volume12/4/2013 1:11:33 PMPage 2

Cell Membranes & Transport10Which of the following accurately describes what will take place next If the semi-permeablemembrane separating the two sides of the tube allows passage of glucose and water or-mediated endocytosisWhich process includes all the others?ABCD13sucrose will diffuse from side B to Aglucose will diffuse from side A to BGlucose will diffuse from side B to AThere will be a net movement of water from side B to ALarge molecules are moved out of the cell by which of the following processes?ABCD12Page 3osmosisdiffusion of a solute across a membranefacilitated diffusionpassive transportA membrane permeable to glucose & fructose, but not sucrose is immersed in a beakercontaining a different solution than what is inside the membrane. Which solute(s) willexhibit a net diffusion into the cell?ABCDfructosesucroseglucoseboth fructose and glucose12/4/2013 1:11:33 PM

Cell Membranes & Transport14The membrane is permeable to glucose & fructose, but not sucrose. Which solute(s) willexhibit a net diffusion out of the dialysis tubing into the beaker?ABCD15Which solution is hypertonic to the otherABCD16dialysis tubing for sucrose onlydialysis tubing for glucose onlybeaker solution for fructose onlybeaker solution for sucrose & glucoseWhich is most likely to occurABCD17watersucrosefructoseglucoseosmosis will occur from the beaker to the bagthe bag will gain mass due to osmosiswater will diffuse out of the dialysis bag by osmosisthe mass of both the beaker & bag will increase slightlyIf a cell dies, but its membrane is still intact, which of the following will cease to occur?ABCDdiffusionpassive supportactive transportosmosis12/4/2013 1:11:33 PMPage 4

Cell Membranes & TransportPage 5Answer Key : Cell Membranes & 13 1:11:33 PMAnswerADCDCDBCCCCDADCCC

A active transport B bulk flow C osmosis D facilitated diffusion Movement of water out of a cell resulting in the collapse of the plasma membrane surrounding the central vacuole. 4 A bulk flow B osmosis C facilitated diffusion D plasmolysis 5 Movement of solutes across a plasma membrane requiring addition