9th grd Passive Cell
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each of the black spaces below before clicking
on it to display the answer.
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| cell membrane | also called the plasma membrane, separates the interior of all cells from its outside environment
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| concentration gradient | the difference in the concentration of a substance between two areas
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| crenation | a process resulting from osmosis in which red blood cells undergo shrinkage and acquire a notched surface
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| diffusion | the net movement of small or uncharged particles from an area of high concentration to an area of low concentration
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| equilibrium | once a substance has fully dispersed through a medium
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| extracellular space | the space outside of the cell membrane but part of a multicellular organism
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| facilitated diffusion | movement of particles from an area of high concentration to an area of low concentration-the particles cannot move directly so they move through channel proteins which function like doorways in the cell membrane
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| flaccid | when the flow of water into the cell and out of the cell exists in equilibrium in a plant cell
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| hypertonic | having a higher osmotic pressure than a particular fluid
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| hypotonic | having a lower osmotic pressure than a particular fluid
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| hydrophilic | having a tendency to mix with, dissolve in or be wetted by water
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| hydrophobic | lacking an affinity (love) for water, insoluble in water or repels water
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| intracellular space | the space within the organism's cells
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| isotonic | solution with the same osmotic pressure as some other solution
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| lipid bilayer | thin polar membrane made of 2 layers of lipid molecules
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| lysis | the disintegration of a cell by rupture of the cell wall or cell membrane
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| osmosis | the spontaneous passage or diffusion of water or other solvents through a semipermeable membrane
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| partially permeable membrane | a membrane that is permeable to the small molecules of water and certain solutes but does not allow the passage of large solute molecules
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| passive transport | process of moving substances in and out of a cell and requires no energy expenditure
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| phosolipid | found in the cell membrane-has 2 parts the head (hydrophilic) and the tail (hydrophobic)
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| plasmolysis | a process resulting from osmosis in which when water flows from an area of high concentration to an area of low concentration and causes the cell membrane to shrink away from the cell wall of a plant cell
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| surface area to volume ratio | the area on a cell's surface compared to the area inside the cell
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| transport protein | protein that serves the function of moving other materials within an organism
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| turgid | the state of being swollen especially due to high fluid content
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