biological membranes 0.0 / 5 ? BiologyCellular processes and structureA2/A-levelOCR Created by: emilyamkerrCreated on: 17-04-19 12:12 10685972314 Across 1. movement of molecules from an area of high concentration of that molecule to an area of low concentration; it may or may not be across a membrane; it does not involve metabolic energy (9) 4. the movement of substances against their concentration gradient (from low to high) across a cell membrane using ATP and protein carriers (6, 9) 7. measure of the tendency of water molecules to diffuse from ore region to another (5, 9) 8. lipid/phospholipid with a chain of carbohydrate molecules attached (10) 10. movement of molecules from an area of high concentration to low concentration, across a partially permeable membrane via protein channels or carriers; it does not involve metabolic energy (11, 9) Down 2. bulk transport of molecules too large to pass through a cell membrane even via channel carrier proteins into a cell membrane (11) 3. passage of water molecules down their water potential gradient across a partially permeable membrane (7) 5. bulk transport of molecules too large to pass through a cell membrane even via channel or carrier proteins, out of a cell (10) 6. cell surface membrane (4, 7, 8) 9. protein with a chain of carbohydrate molecules attached (12)
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