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energy & metabolism
| Question | Answer |
|---|---|
| first law of thermodynamics | energy cannot be created or dstroyed, only changed |
| second law of thermodynamics | some energy is given off as heat during energy conversions, resulting in more entropy(disorder) |
| enrgy | is the capacity to do work |
| chemical energy | the energy that exists in chemical bonds |
| energy of motion | kinetic energy |
| energy of poosition | potential energy |
| most important type of energy in biology | chemical energy |
| kilojoules | measurement of energy |
| metabolism | chemical reactions (energy) that enables living things to grow, reproduce, repair, move,and respond to stimuli |
| the sum total of al those chemical reactions | metabolism |
| enthalpy | total energy of a system (H) |
| free energy | energy available to do work, a.k.a Gibb's free energy (G) |
| changed is energy are represented by | a triangular symbol |
| types of reaction | endergonic and exergonic |
| release energy and change is negative, an example is diffusion | exergonic |
| produces energy and change is positive | endergonic |
| energy of the cell | ATP |
| enthe molecule that the cell uses to store and transfer energy | ATP |
| AMP + Pi | ---> ADP |
| ADP + Pi | ---> ATP |
| Pi | inorganic phophate |
| thermodynamics | study of energy |
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