BIOL 1P91 Final Exam real Questions And Answers Correct 100% | verified

BIOL 1P91 Final Exam real Questions And Answers Correct 100% | verified Metabolism - ANSWER All of the chemical reactions that occur within an organism Chemical Reaction - ANSWER The process by which one or more substances change to produce one or more different substances Purpose of Food - ANSWER 1. Provide organic materials needed to maintain cells and support growth of new cells and tissues 2. Provides a source of energy to promote chemical reactions that cannot occur without an input of energy Energy - ANSWER The ability to do work Kinetic Energy - ANSWER Energy of motion Potential Energy - ANSWER Stored energy that results from the position or shape of an object Chemical Energy - ANSWER A form of potential energy that is stored in chemical bonds between atoms. Thermodynamics - ANSWER The study of energy transformations that occur in a collection of matter. First Law of Thermodynamics - ANSWER Energy can be transferred and transformed, but it cannot be created or destroyed. Law of Conservation of Energy - ANSWER Energy can be transformed from one form into another or transferred from one region to another, but energy cannot be created or destroyed Second Law of Thermodynamics - ANSWER Every energy transfer or transformation increases the entropy of the universe. Entropy - ANSWER Degree of disorder; to make something happen, degree of disorder in universe must increase Usable Energy - ANSWER Can be used to do work; the less unusable energy, the faster things can be done Free Energy - ANSWER Energy that is available to do work Spontaneous Reactions - ANSWER Occur without input of additional energy; not necessarily fast; key factor is the free energy change Exergonic Reaction - ANSWER A chemical reaction that releases energy Endergonic Reaction - ANSWER A chemical reaction that doesn't release energy Chemical Equilibrium - ANSWER A state of balance in which the rate of a forward reaction equals the rate of the reverse reaction and the concentrations of products and reactants remain unchanged Catalyst - ANSWER Substance that speeds up the rate of a chemical reaction Enzymes - ANSWER Proteins that act as biological catalysts Activation Energy - ANSWER Initial input of energy to start a reaction Transition state - ANSWER States were original bonds have stretched to their limit and chemical reaction can readily proceed to the formation of products Active Site - ANSWER The part of an enzyme or antibody where the chemical reaction occurs. Substrate - ANSWER Reactant of an enzyme-catalyzed reaction Substrate Binding - ANSWER Enzymes