Biology 2601A/B Midterm: 2601-PREMIDTERM
16 Feb 2017
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Document Summary
Temperature of tissues also helps determine the rate of energy expenditure. Temperature is universally important in these ways: 1. Ambient temperature (environmental temperature) is a principle determinant of an a(cid:374)i(cid:373)al(cid:859)s metabolic rate and therefore the rate at which an animal must acquire food: 2. Tissue temperature affects functional properties, biophysical processes(diffusion and osmosis) the rates of biochemical reactions, and the various physical states of cellular materials ex. phospholipid bilayer fluidity. Temperature: not proportional to matter/size, the speed or intensity of these incessant random motions of the atoms( function of motion at a molecular level, dictates direction of energy transfer. Heat moves by conduction or convection from high temperature to low. Transfer of heat raise temp of the object it is moving into. Objects at thermal equilibrium have no net movement of heat between them. Everything above 0 kelvin is emitting radiation.
