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Test 1

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
Metabolism   sum of all physical and chemical reactions occurring within a living system  
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1st law of thermodynamics   energy cannot be created or destroyed  
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2nd law of thermodynamics   all things tend towards disorder  
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Enzyme characteristics   -specificity -competition -saturation  
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allosteric binding   noncompetitive binding: cofactor binds  
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NAD   coenzyme from niacin -transports electrons in oxidation-reduction reactions -helps to transport electrons within mitochondria  
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solvent   greatest quantity in a solution  
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solute   dissolved, lowest quantity, polar  
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gradient   change in the value of a quantity with change in a given variable -temp -pressure -concentration  
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potential   measure of a difference from one point to another with a driving force  
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Passive transport categories   -simple diffusion -osmosis -facilitated diffusion  
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diffusion   net movement of molecules from a region of high concentration to region of lower concentration towards equilibrium  
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factors that influence diffusion   -temperature -pressure -molecular size -concentration -permeability -type of solvent -distance to diffuse  
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passive membrane transport   -pores -gate channels lingand gated: key opens mechanically gated: physical force voltage gated: electrical signal -facilitated transported: bind to then moved to other side, lower saturation  
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characteristics of protein transporters/ enzymes   -specificity -competition -saturation  
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Osmosis   net movement of water from a region of low solute concentration to a region of high solute concentration across a selectively permeable membrane towards equalibrium  
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osmotic pressure   measure of the tendency for a solution to gain water by osmosis when separated by a membrane from pure water. directly related to the osmolarity of the solution  
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Created by: brit24
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