04:51Cell Membrane Transport - Transport Across A Membrane - How Do Things Move Across A Cell MembraneWhats Up Dude1167views
Multiple ChoiceWhich direction would you expect water to move across the cell membrane?2815views38rank
Multiple ChoiceWhat would you expect to happen to the cell under the following conditions?2555views31rank2comments
Multiple ChoiceA selectively permeable membrane separates two solutions. Water is able to pass through this membrane; however, sucrose (a disaccharide) and glucose (a monosaccharide) cannot pass. The membrane separates a 0.2-molar sucrose solution from a 0.2-molar glucose solution. With time, how will the solutions change? 4736views
Multiple ChoiceThe internal solute concentration of a plant cell is about 0.8 M. To demonstrate plasmolysis, it would be necessary to suspend the cell in what solution? 2223views
Multiple ChoiceA single plant cell is placed in an isotonic solution. Salt is then added to the solution. Which of the following would occur as a result of the salt addition? 2395views
Multiple ChoiceSeawater is hypertonic to cytoplasm in vertebrate cells and in plant cells. If a red blood cell and a plant cell were placed in seawater, what would happen to the two types of cells? 2320views
Multiple ChoiceThe concentration of solutes in a red blood cell is about 2%, but red blood cells contain almost no sucrose or urea. Sucrose cannot pass through the membrane, but water and urea can. Osmosis would cause red blood cells to shrink the most when immersed in which of the following solutions? 2729views2rank
Multiple ChoiceGreen olives may be preserved in brine, which is a 30% salt solution. How does this method of preservation prevent microorganisms from growing in the olives? 1672views
Textbook QuestionA plant cell placed in distilled water will ______________; an animal cell placed in distilled water will ______________. a. burst … burst b. become flaccid . . . shrivel c. become turgid . . . be normal in shape d. become turgid . . . burst1083views
Textbook QuestionThe sodium concentration in a cell is 10 times less than the concentration in the surrounding fluid. How can the cell move sodium out of the cell? (Explain your answer.) a. passive transport b. receptor-mediated endocytosis c. active transport d. facilitated diffusion930views
Textbook QuestionA cell that is placed in salty seawater will . a. take sodium and chloride ions in by diffusion; b. move water out of the cell by active transport; c. use facilitated diffusion to break apart the sodium and chloride ions; d. lose water to the outside of the cell via osmosis1255views
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