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Vocabulary Review

Vocabulary Review. Homeostasis and Cell Transport. The movement of substances across a cell membrane without any input of energy. Passive Transport. The movement of molecules from an area of higher concentration to an area of lower concentration. Diffusion.

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Vocabulary Review

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  1. Vocabulary Review Homeostasis and Cell Transport

  2. The movement of substances across a cell membrane without any input of energy Passive Transport

  3. The movement of molecules from an area of higher concentration to an area of lower concentration Diffusion

  4. The difference in the concentration of molecules across a distance Concentration gradient

  5. Concentration of molecules is the same throughout the space the molecules occupy Equilibrium

  6. Movement of water molecules from high concentration to low concentration Osmosis

  7. Concentration of solute molecules outside the cell is LOWER than in the cytosol; water diffuses into the cell Hypotonic

  8. Concentration of solute molecules outside the cell is HIGHER than in the cytosol; water diffuses out of the cell Hypertonic

  9. Concentrations of solutes outside and inside the cell are equal Isotonic

  10. Organelles that remove water through contraction Contractile Vacuoles

  11. The pressure that water molecules exert against the cell wall Turgor pressure

  12. The shrinking of a cell due to water’s moving out the cell when placed in a hypertonic environment Plasmolysis

  13. The swelling and eventual bursting of a cell as water moves into it when placed in a hypotonic environment Cytolysis

  14. The movement of substances across a cell membrane with the assistance of protein carriers Facilitated Diffusion

  15. The proteins that move certain molecules into the cell that cannot readily diffuse through the cell membrane Carrier Proteins

  16. A complex of protein molecules in a cell membrane that form a pore through which ions can pass Ion Channels

  17. The movement of chemical substances, usually across the cell membrane, against a concentration gradient; requires energy Active Transport

  18. A carrier protein that uses ATP to actively transport sodium ions out of a cell and potassium ions into the cell Sodium-Potassium Pump

  19. The process by which a cell membrane surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell Endocytosis

  20. Small cavity or sac that contains materials; forms when part of the membrane surrounds the materials to be taken into or out of the cell Vesicle

  21. A method of active transport across the cell membrane in which the cell takes in extracellular fluids Pinocytosis

  22. The process by which a cell engulfs large particles or whole cells, either as a defense mechanism or as a means to obtain food Phagocytosis

  23. A cell that ingests and destroys (digests) foreign matter or microorganisms Phagocyte

  24. The process by which a substance is released from the cell through a vesicle that transports the substance to the cell surface and then fuses with the membrane to let the substance out Exocytosis

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