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22 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Cytoplasm |
The contents in a cell |
Holds everyhting in a cell |
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Phospholipids |
Major part of a cell membrane, they form lipid bilayers |
Make up the bilayer |
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Phospholipid bilayer |
Component of all cell membranes, composed of two sheets of fatty acids |
Polar heads face out |
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Polar |
A molecule that contains non-unifrom negative and positive ends |
Phospholipids have _______ heads |
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Nonpolar |
A molecule where the electrons are equally balanced in the nucleus |
Phospholipids have ____________ tails |
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Transport proteins |
Allow large polar molecules and ions through the bilayer |
Span the bilayer |
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Selective permeability |
Allows certain molecules or ions to pass through it |
The membrane of a cell is ______________ ______________ |
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Glycoproteins |
Proteins that have carbohydrate groups attached |
Play essential roles in the body |
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Glycolipids |
Lipids with carbohydrates attached |
Provide energy |
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Fluid Mosiac Model |
Structure of a cell membrane that is flexible |
Contains phospholipid bilayer amd transport protein |
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Diffusion |
Particles move from high concentration to low concentration |
Small nonpolar and polar molecules move across the membrane with ______________ |
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Concentration gradient |
A difference in concentation of a substance across an area |
Used by cells as a way of |
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Osmosis |
The diffusion of water, going from high concentration to low concentration |
Equalize the solution concentrations on both sides |
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Turgor |
The elasticity of something |
Skin has a lot of __________ |
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Isotonic |
Equal amount of water in and out of cell |
Diffuses at equal rates |
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Hypotonic |
More water outisde the cell than inside |
Cell may burst |
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Hypertonic |
More water inside the cell than outisde |
Cell shrivels |
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Passive transport |
Doesnt require energy to move a substance |
No energy |
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Active transport |
Requires energy to move a substance through transport proteins |
Energy needed |
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Facilitated diffusion |
Movement of large polar molecules from high concentration to low concentration |
A form of transport |
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Endocytosis |
Folding in the cell membrane moves very large substances into the cell |
Form of active transport |
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Exocytosis |
Folding in the cell membrane that moves very large substances out of the cell |
Involved in many cellular processes |
