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15 Cards in this Set
- Front
- Back
Active Transport |
The movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.
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Diffusion
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The spreading of something more widely.
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Endocytosis
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The taking in of matter by a living cell by invagination of its membrane to form a vacuole.
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Exocytosis
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A process by which the contents of a cell vacuole are released to the exterior through fusion of the vacuole membrane with the cell membrane.
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Facilitated diffusion
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The process of spontaneous passive transport
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Osmosis
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A process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one
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Passive transport
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A movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input.
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Sodium-potassium pump
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Active transport is responsible for the fact that cells contain a relatively high concentrations ofpotassium ions but low concentrations ofsodium ions
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Transport protein
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Is a protein that serves the function of moving other materials within an organism
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Vesicle transport
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A cellular transport process in which transported substances are moved in membrane-boundedvesicles
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Hypertonic Solution |
A particular type of solution that has a greater concentration of solutes on the outside of a cell when compared with the inside of a cell
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Hypotonic Solution |
Any solution that has a lower osmotic pressure than another solution
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Isotonic Solution |
Refers to two solutions having the same osmotic pressure across a semipermeable membrane
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Concentration Gradient |
The process of particles, which are sometimes called solutes, moving through a solution or gas from an area of higher number of particles to an area of lower number of particles
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Equilibrium |
The condition in which all acting influences are balanced or canceled by equal opposing forces, resulting in a stable system
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