Class Notes (786,424)
Canada (482,184)
Biology (6,616)
Biology 1002B (1,323)
All (8)
Lecture 6

Lecture 6 - Enzymes.docx

4 Pages
Unlock Document

Western University
Biology 1002B

EnzymesWhat Enzymes Do And Do Not DoSpeed up a spontaneous reactionCannot provide energy therefore can not induce an endergonic reaction Exergonic ReactionG is negativeoSubstrates need more free energy EActivation EnergyAoRepresents a barrieroFew molecules possess enough energy to overcome kinetic barrier Thermodynamically unstable oPropanethermodynamically unstable but kinetically stable slow reaction Kinetic Barrier speed oExplains why spontaneous reactions are not always rapid Transition stateoHigher energy state oBonds break Enzymes Lower Activation EnergyEnergy required to get to transition state is lowered in presence of catalyst Change the path of reaction Rate is proportional to the number of activated moleculesEnzymes increase the number of molecules able to overcome barrier Life Needs EnzymesoCannot increase temperature pressure etc to drive reactionsEnzyme StructureEnzymes must be flexibleActive site only apparent when enzyme in its native conformation Conformation of enzyme changes upon substrate binding to active site induced fit Biological catalysts Binds to its substrate forming an enzymesubstrate complexRate of catalysisvaries but FAST
More Less

Related notes for Biology 1002B

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.