Biology
Biology, 15.10.2019 17:00, Svetakotok

The rate of diffusion is affected by which of the following? a) temperature b) size of molecules c) steepness of the concentration gradient d) a and b e) a, b and c

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Biology, 13.07.2019 04:40, carlosbs71
How does each of the following molecule pass through the plasma membrane in the described scenarios? a. both simple diffusion and facilitated diffusion b. facilitated diffusion c. active transport d. simple diffusion selectabcd 1. molecular oxygen (o2) and carbon dioxide (co2) traveling down their concentration gradient. selectabcd 2. inorganic ions traveling down their concentration gradient selectabcd 3. glucose traveling against its concentration gradient selectabcd 4. water molecules (h2o) traveling down their concentration gradient
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Biology, 14.07.2019 22:30, melaniegilbreath
Matching: match each description with the correct term. a. active transport b facilitated diffusion c. diffusion d. osmosis e. exocytosis 1. the movement of molecules from an area of high concentration to an area of low concentration. 2. the diffusion of water molecules. 3. energy is used to move molecules from an area of low concentration to an area of high concentration. 4. membrane proteins are used to move molecules across the membrane but no energy is required. 5. the movement of molecules down their concentration gradient. 6. the movement of molecules up/against their concentration gradient. 7. membrane proteins are used to move molecules across the membrane but energy from atp is required. 8. a type of active transport that involves vesicles moving molecules out of a cell.
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Biology, 09.10.2019 20:00, rubend7769
Which of the following is the least likely to increase the rate of diffusion? a. small concentration gradient. b. higher temperature. c. higher concentration of molecules. d. small molecule size
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