Term
| 3 Major Regions of a Cell |
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Definition
1. Plasma Membrane
2. Cytoplasm
3. Nucleus |
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Definition
| An organelle that contains most of the cell's DNA |
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Term
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Definition
| A single molecule of DNA associated with several proteins. |
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Term
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Definition
| A spherical body with a cell nucleus compose of protein, DNA and RNA. Site of small and large ribosomal units. |
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Term
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Definition
| A flexible yet sturdy barrier that surrounds and contains the cytoplasm of a cell |
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Term
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Definition
| Lipids containing phosphorous. |
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Term
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Definition
| Allowing some substances to pass more readily than others. |
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Term
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Definition
| energy derived from the hydrolysis of ATP changes the shape of a carrier protein, which pumps a substance across a plasma membrane against the it's concentration gradient. |
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Term
| Secondary Active Transport |
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Definition
| The energy stored in Na+ and H+ concentration gradient is used to drive other substances across the membrane against their concentration gradient. |
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Term
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Definition
| materials move INTO a cellin a vesicle formed from teh plasma membrane |
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Term
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Definition
| A form of Endocytosis where tiny droplets of extracellular fluid are taken up. |
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Term
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Definition
| The cell engulfs large particles. |
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Term
| Receptor Mediated Endocytosis |
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Definition
| Ligand-Receptor complexes trigger infolding of Clathrin coated pit that forms a vesicle containg ligands. |
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Term
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Definition
| Movement of substances OUT of a cell. Secretory vesicles that fuse with the plasma membrane and release the contents into the extracellular fluid. |
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Term
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Definition
| A passive process in which the random mixing of particles in a solution occurs because of the particles kinetic energy. |
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Term
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Definition
| A process in which substances move freely through the lipid bilayer of the plasma membrane. |
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Term
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Definition
| A type of diffusion where there is a net movement of a solvent through a selectively permeable membrane |
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Term
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Definition
| A type of diffusion where an integral membrane protein assists a specific substance across the membrane. |
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Term
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Definition
| The difference in the concentration of one chemical from one place to another. |
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Term
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Definition
| Having equal tension or tone. A solution having the same concentration as cytosol. |
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Term
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Definition
| HIGHER concentration of solutes than does the cytosol in RBCs. |
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Term
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Definition
| A solution that has LOWER concentration of solutes than the cytosol of RBCs. |
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Term
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Definition
| Non-motile microscopic, fingerlike projections of the plasma membrane. |
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Term
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Definition
| Fluid portion of the cytoplasm that surrounds organelles. |
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Term
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Definition
| Specialized structures within the cell that have characteristic shapes and perform specific functions in cellular growth, maintenance and reproduction. |
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Term
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Definition
| The site of protein synthesis. |
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Term
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Definition
| Continuous with the nuclear membrane and usually folded into flattened sacs. Studded with Ribosomes. |
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Term
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Definition
| Extends from Rough ER to form a network of membrane tubules. Contains enzymes. |
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Term
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Definition
| consisting of 3-20 cisternae. The first step in the transport pathway. |
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Term
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Definition
| Powerhouses of the cell. Plays a central role in the production of ATP through aerobic respiration. |
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Term
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Definition
| largest of the cytoskeletal components. Large unbranched hollow tubes. |
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Definition
| In between. Thicker than microfilaments but smaller than microtubules. |
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Term
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Definition
| Thinnest elements of the cytoskeletal system. |
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Term
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Definition
| A double membrane that separates the nucleus from the cytoplasm. |
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Term
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Definition
| the contraction of a cell after exposure to a hypertonic solution. |
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Term
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Definition
| The breaking down of a cell. |
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Term
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Definition
| similar to lysosomes. contain enzymes that us molecular Oxygen. |
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Term
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Definition
| Membrane enclosed vesicles that form from the Golgi Complex. |
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