Homework 5 - huynh (hph268) HW 5 Sathasivan (49810) 1 This...

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Unformatted text preview: huynh (hph268) HW 5 Sathasivan (49810) 1 This print-out should have 10 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 10.0 points The diffusion of water across a cell membrane due to a concentration gradient is called 1. phagocytosis. 2. endocytosis. 3. active transport. 4. facilitated diffusion. 5. osmosis. correct Explanation: Definition of osmosis diffusion is the movement of any other molecule from high to low concentration. 002 10.0 points Placing a plant cell in a hypotonic solution will cause the cell to 1. swell. correct 2. shrivel. 3. burst. 4. not change at all. 5. divide. Explanation: In hypotonic solutions, there is less solute (and therefore more water) outside the cell; therefore, water will rush into the cell. Plant cells prefer this environment, and use the wa- ter to keep the stem upright and rigid. Unlike animal cells, plant cells have cell walls to pre- vent the cell from bursting....
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This note was uploaded on 06/06/2011 for the course CHEM 301 taught by Professor Wandelt during the Spring '08 term at University of Texas at Austin.

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Homework 5 - huynh (hph268) HW 5 Sathasivan (49810) 1 This...

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