biofinal - Vocabulary- Bio Final 26/11/2007 23:38:00...

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Unformatted text preview: Vocabulary- Bio Final 26/11/2007 23:38:00 Myosin- a eukaryotic protein that can be polymerized to form thick filaments that are used in muscle contraction and intracellular movement. Type 2 myosin supports faster contraction because it hydrolyzes ATP more rapidly than type 1 myosin does. Actin- globular protein that can be polymerized to form actin filaments, which are involved w/ cell movement. Troponin- muscle protein that can trigger muscle contraction by moving tropomyosin binding sites on actin filaments. Activated by high intracellular calcium. Tropomyosin- Key protein, muscle protein that blocks the myosin binding sites on actin filaments preventing muscle contraction. Can be moved out of the way by troponin when intracellular calcium is high. Cyclic adenosine monophosphate (cAMP)-a small molecule, derived from ATP that is widely used in cells for signaling and regulation. Ex. In gene transcription, enzyme control, and hormone signal transduction Phosphorylase- an enzyme that breaks done glycogen, by catalyzing hydrolysis of the alpha/glycosidic linkages between the glycose monomers Epinephrine- Also known as Adrenaline, catecholamine hormone from the adrenal medulla. Triggers rapid responses relating to the flight or fight response. Norepinephrine- (phenyelphrine) a molecule chemically related to epinephrine ( a saline solution) Cortisol- (Corticosterone) Are Glucocorticoids. They Regulate blood glucose. Released by the cortex of the adrenal gland and it increases blood glucose and prepares the body for stress. Also referred to as Hydrocortisone. Estrogen- a steroid hormone, the development of the female reproductive tract depends on the action of this hormone Testosterone- a steroid hormone, induces early development of the male reproductive tract Sarcoplasmic Reticulum- sheets of smooth endoplasmic reticulum in a muscle cell, contains high concentrations of calcium, which can be released into the cytoplasm to trigger contraction. Module 5 Module 6 Module 1 1-16; 934-953 26/11/2007 23:38:00 Convection- transfer of heat by movement of large volumes of a gas or liquid Conduction- direct transfer of heat between two objects that are in physical contact Radiation- production of electromagnetic energy (light). One of the mechanisms of heat transfer between organisms and the environment....
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biofinal - Vocabulary- Bio Final 26/11/2007 23:38:00...

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