BIOL 1201 Lecture : Week 4

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15 Mar 2019
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Free energy and chemical reactions: spontaneous (doesn"t mean it will happen quickly, just means it will happen, release free energy (exergonic, needs activation energy, this is what makes spontaneous go slowly, non-spontaneous. Delta g= : require free energy (endergonic) H= enthalpy- heat energy of the compound the greater number of bonds correlate to higher enthalpy. S= entropy: greater disorder, more entropy less disorder, less entropy. Delta g= delta h t delsta s. - t (+: heat energy was released. Increasing: change in heat energy, gets cold, when chemicals are taking up heat, feels cold. What happened during this reaction: it was spontaneous great increase in entrapy was great enough to overcome entropy. In order for reaction to always be spontaneous, delta g must be negative. Delta g= delta h (-)delta g=delta h(-)- decrease in enthaply. Delta g= -tdelta s (+)- increase in entropy. Enzymes almost all are proteins large globular proteins.

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