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9th grd Energy
| Question | Answer |
|---|---|
| energy | the ability to do work |
| thermodynamics | the study of the flow and transformation of energy in the universe |
| 1st law of thermodynamics | energy can be converted from one form to another but cannot be created or destroyed |
| 2nd law of thermodynamics | energy cannot be converted without the loss of usable energy |
| autotroph | supplies one's own food |
| heterotroph | ingest food to obtain energy |
| metabolism | all of the chemical reactions in a cell |
| photosynthesis | the anabolic pathway in which light energy from the sun is converted to chemical energy for use by the cell |
| cellular respiration | catabolic pathway in which organic molecules are broken down to release energy for use by a cell. |
| adenosine triphosphate ATP | the most important biological molecule that provides chemical energy |
| photosynthesis | process used by autotrophs to create organic compounds like sugars |
| thylakoids | found in chloroplast flattened sac like membrane |
| grana | stacks of thylakoids |
| stroma | fluid filled space outside the grana |
| pigments | light absorbing colored molecules found in the thylakoids |
| NADP+ | molecules that transport electrons during photosynthesis |
| NADPH | this is a energy storage molecule that is formed when ferroxdoxin transfers electrons to NADP+ |
| chemiosmosis | mechanism by which ATP is produced as a result of the flow of electrons down a concentration gradient |
| Calvin cycle | second phase of photosynthesis in which energy is stored in organic molecules |
Created by:
kimbetcher
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