7188664
Description
Flashcards by Kimberlee Hernandez, updated more than 1 year ago
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Created by Kimberlee Hernandez
about 8 years ago
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| Question | Answer |
| Energy | Capacity to do work |
| Kinetic energy | Energy doing work (in motion) |
| Potential energy | Stored energy |
| First law of thermodynamics (2) | -energy can be changed from one form to another -cannot be created or destroyed |
| 2nd law of thermodynamics (3) | -energy changes are not 100% efficient -some energy always lost as heat -entropy (randomness) in universe increases |
| Cellular metabolism | -anabolic: build up, more ordered (dehydration -catabolic: breaking down, less order, hydrolysis |
| Endergonic (endothermic) | Absorb energy and yield products rich in potential energy |
| Exergonic (exothermic) | Release energy and yield products that contain less potential energy than their reactants |
| Free energy | Energy available to do work |
| If free energy is negative .... | Energy is released, reaction is spontaneous (exergonic, heat and light) |
| If free energy is positive.... | Energy is absorbed, reaction is not spontaneous |
| ATP molecules are key to energy coupling | Energy from exothermic reactions is used to power endothermic reactions |
| When phosphate group breaks off from ATP (3) | -Reaction is exergonic -reaction supplies energy for cellular work -energy is transferred |
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