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22 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Cytoplasm |
Interior content of all cells. |
The substance which holds all organelles in a cell. |
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Phospholipids |
Two fatty acid tails with one phosphate head. |
Major lipid in all cell membranes. |
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Phospholipid bilayer |
Organization of phospholipids. |
Structure within the cell membrane; universal component. |
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Polar |
A molecule with a partial positive charge and a complementary negative charge. |
H2O is one of these. |
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Nonpolar |
These molecules have equal sharing of electrons, and the charges are equal. |
CO2 is one of these types of molecules. |
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Transport Proteins |
Proteins used to pass necessary polar molecules and ions through the membrane. |
Within the bilayer, these are important in delivering nutrients to the cell. |
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Selective permeability |
A type of membrane that allows certain materials by active or passive transport. |
Also referred to as "semi". |
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Glycoproteins |
A Receptor protein; protein + sugar |
A protein that monitors the cell membrane and reacts with hormones. |
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Glycolipids |
A receptor lipid; lipid + sugar |
Lipids that provide energy; cellular recognition as markers. |
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Fluid Mosaic Model |
Flexible structure of the cell membrane. |
Phospholipid bilayer, transport proteins, receptors. |
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Diffusion |
The process of molecules intermingling. |
A mixing of certain materials. |
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Concentration gradient |
A difference in the concentration of particles across an area. |
Imbalance in amount, across an area. |
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Osmosis |
The movement of particles through a semi-permeable membrane. |
Passing of molecules in order to equalize both sides. |
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Turgor |
The state of tension within the cell |
Pressure on the cell caused by osmosis. |
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Isotonic |
Movement of water in and out of a cell is equal. |
"Equilibrium" of water movement; even number in and out. |
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Hypotonic |
A cell in a hypotonic solution has less water flow outward, but more on the uptake. |
Cell bloating. |
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Hypertonic |
A hypertonic solution has a higher flow outward and less on the uptake. |
Cell dehydration. |
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Passive Transport |
The movement of molecules across the cell membrane without the use of energy. |
Small polar and nonpolar molecules use this to get in the cell. |
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Active Transport |
The passage of molecules through the membrane using transport proteins. |
Larger polar molecules and ions use this to cross into the cell. |
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Facilitated diffusion |
A type of transport that uses no energy to pass larger molecules and ions across the membrane. |
Spontaneous transport. |
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Endocytosis |
Form of active transport where the cell transports molecules into itself by engulfing it. |
An energy using process; IN |
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Exocytosis |
Exocytosis is an active transport in which a cell pushes molecules out using energy. |
Excretion of molecules by the cell; OUT |
