LIFESCI 23L Chapter Notes - Chapter D: Carboy, Bar Chart, Lightdark
Document Summary
Totality of these reactions at given instant (sum of catabolic and anabolic processes) Break down molecules, release energy -> then stored in atp molecules. In fish - build new body tissue for growth/maintenance/reprod. Some still need activation energy from outside source. Less enzyme than substrate present -> levels out at a max rate (instead of linear increase w/o catalyst) Not spontaneous, require free energy (energy must be available ph and enzyme activity. Interact w/ other molecules/enzymes to change activity homeotherm. Amount of heat is proportion to volume/# of cells. Relative weight specific metabolic rate decreases w/ body mass. Small endotherm"s relative met rate much greater than large endotherms (also true in ectotherm) Rate of heat loss is proportional to area. This means endotherm have to eat more food. Size, age, activity, condition (need more tissue maintenance), environment (temp, salinity, oxygen level) Waste = co2, ammonia, water, larger molecules (purine/urea)
