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| a unit of energy; thermal energy required to raise the temperature of one gram of water by one degree Celsius |
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| the process by which green plants and some microorganism use solar energy to convert water and carbon dioxide to carbohydrates (stored chemical energy) |
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adenosine diphosphate
a compound consisting of an adenosine molecule bonded to two phosphate groups |
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adenosine triphosphate
a compound consisting of an adenosine molecule bonded to three phosphate groups, present in all living tissue. The breakage of one phosphate linkage (to form adenosine diphosphate, ADP) provides energy for physiological processes such as muscular contraction. |
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Definition
| a unit of energy; thermal energy required to raise the temperature of one kilogram of water by one degree Celsius; commonly used to express quantity of food energy; informally called food calorie |
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