Glencoe Life Science Chapter 3 Vocabulary
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Created by:
saufdenkamp on November 9, 2011
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15 terms
Terms | Definitions |
|---|---|
 MIXTURE | a blend of two or more kinds of matter, each of which retains its own identity and properties |
| ORGANIC COMPOUND | compounds that always contain hydrogen and carbon; carbohydrates, lipids, proteins, and nucleic acids are organic compounds found in living things. |
| ENZYMES | specialized PROTIENS that speed up chemical reactions in cells |
| INORGANIC COMPOUND | compound, such as H2O, that is made from elements other than carbon and whose atoms usually can be arranged in only one structure |
| PASSIVE TRANSPORT | the movement of substances across a cell membrane without the use of energy by the cell |
| DIFFUSSION | process by which molecules tend to move from an area where they are more concentrated to an area where they are less concentrated |
| EQUILIBRIUM | a state that exists when the concentration of a substance is the same throughout a space |
| OSMOSIS | passive transport of water across a selectively permeable membrane |
| ACTIVE TRANSPORT | the movement of materials through a cell membrane using energy |
| ENDOCYTOSIS | process by which a cell takes in a substance by surrounding it with the cell membrane |
| EXOCYTOSIS | process by which vesicles release their contents outside the cell |
| METABOLISM | the sum of all chemical processes that occur in an organism |
| PHOTOSYNTHESIS | process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches |
| RESPIRATION | the process by which cells break down simple food molecules to release the energy they contain |
| FERMENTATION | process by which oxygen-lacking cells and some one-celled organisms release small amounts of energy from glucose molecules and produce wastes such as alcohol, carbon dioxide, and lactic acid |
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