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17 Cards in this Set
- Front
- Back
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The _____ is the basic functional unit of all living things.
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Cell
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The ________ seperates internal metabolic events from the externnal environment and controls the movement of materials into and out of the cell.
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Plasma membrane
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The plasma membrane is composed of _____________
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Phospolipid bilayer
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The phospholipid bilayer is seclectively ____________
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permeable
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What can freelly cross the plasma memembrane?
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Small, uncharged polar molcules, (H2O & CO2) and hydrophobic molecules--nonpolar molecules such as O2 and lipid solubel molecules (hydrocarbons).
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The plasma membrane contains:
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Proteins
Cholesterol |
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__________provide passageways through the membrane for certain hydrophilic substances such as polar and charge molecules.
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Channel Proteins
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_______ is the energy source for transport across the membrame
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ATP
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__________are bodies within the cytoplasm that serve to physically seperate the various metabolic activities within cells.
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Organelles
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Define ER
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Endoplamic Reticulum, consists of stackes of flattened sacs involved in the production of various materials.
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Golgi apparatus functions?
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to modify and package proteins and lipids into vesicles
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Define lysosomes
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are vesicles from the golgi that contain digestive enzyems. They break down food and cellular debis and foreign invaders.
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Define mitochondria
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carry out aerobic respiration, in which energy (in the form of ATP) is obtained from carbohydrates
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Name the 3 types of cell junctions
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1. Desmosomes (protein attachments)
2. Tight junctions (tightly stitched seams) 3. Gap junctions (narrow tunnels) |
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Name the types of transport
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1. Passive transport
2. Active transport |
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Name the types of Passive Transport
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1. Osmosis
2. Dialysis 3. Facilitated diffusion |
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Name the mechanisms of Active Transport
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1. Transport protein
2. vesicle Transport a. Exocytosis b. Endocytosis c. Phagocytosis d. Pinocytosis e. Receptor mediated endocytosis |
