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18 Cards in this Set
- Front
- Back
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Phospholipids |
Make up the cell membrane |
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Phospholipid bilayer |
Two layers of phospholipids |
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Polarity |
Allows water to interact with various compounds |
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Transport proteins |
A protein that plays a role in the active orpassive movement of specific substances through cell membranes |
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Selective permeability |
When membranes regulate the exchange of materials in a very specific way. |
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Glycoproteins/ glycolipids |
Proteins/lipids that is linked to sugar or polysaccharide |
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Diifusion |
Refers to the movement of molecules from an area of higher concentration to an area of lower concentration. |
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Concentration gradient |
When there is a difference in concentration of molecules across a distance |
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Osmosis |
Responsible for the movement of water across membranes |
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Turgor |
Outward pressure of a cell against its cell wall |
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Isotonic |
Same concentration of water in cell and solution |
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Hypotonic |
More water concentration |
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Hypertonic |
Less water concentration |
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Passive transport |
Involves diffusion without any input of energy |
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Active transport |
Moves substances against their concentration gradients and requires energy |
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Facilitated diffusion |
Molecules move down their concentration gradient with the help of transport proteins |
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Endocytosis |
Way for multicellular organisms to get food |
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Exocytosis |
Helps remove waste materials |
