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15 Cards in this Set
- Front
- Back
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Temperature: |
Howfast the molecules are colliding determines the direction of heat transfer Willbe the same for any object of the same temperature |
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Heat: |
amount of energy inthe object Proportional to the amount of matter |
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Homeotherms: |
defend a constant body temperature |
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Poikilotherms: |
allow body temperature to vary |
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Heterotherms: |
havemore than one temperature set point, or switch between homeo- and poikilothermy Temporal heterothermy: Hibernating species Regional heterothermy: Migrating |
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Regional endothermy |
different Tb in different parts of the body |
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Q10: |
Howmuch does the rate of a process change over 10 C Q10 = RT/R(T-10) 1 = physical/chemical processes 2-3 = biological processes |
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Kcat |
number of molecules of substrate processed per unit time at saturation |
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Vmax |
maximum rate of reaction |
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Km |
amount of substrate required to reach 50% of Vmax High Km = low affinity Low Km = high affinity |
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affinity to high |
enzymebinds too tightly to substrate = slow reactions |
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Affinity too low: |
enzymebinds too loosely to substrate = reactions less likely to happen |
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Evaporation: |
takes heat away from the animals body |
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thermal inertia |
larger animals are influencedless by environmental temperature same temperature, larger has more heat |
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rete mirable |
VERY effectivecounter-current exchange of heat exchange swim bladder, heater organs, oxygen delivery to retina |
