PCB 3713C Study Guide - Midterm Guide: Lipid Bilayer, Peripheral Membrane Protein, Atp Hydrolysis
25 May 2016
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Physiology: the dynamic study of life; describes the vital functions of living organisms and their organs, cells, and molecules. Genome: grand organizer ; controls molecules, cells, and organs, and the way they interact. Milieu interior: environment in which tissues and cells of the organism live (extracellular fluid) Milieu exterior: physically surrounds whole organism (incl. gastrointestinal tract, sweat ducts, renal tubes) Receive signals from environment and react accordingly. Homeostasis: control of a vital parameter near a stable set point value. Negative feedback loop: responsible for homeostasis; stimulus causes an opposite output in order to maintain an ideal level of whatever is being regulated stimulus sensor response effector. Redundancy: the more vital a parameter is, the more systems to regulate it in case one fails. Equilibrium: special case of steady state that doesn"t require energy consumption. Individual phospholipid molecules can diffuse within membrane plane (leaflet), but do not diffuse between adjacent leaflets ( flip flop )
