Biomolecualr Dynamics Assignment 1

# Biomolecualr Dynamics Assignment 1 - Biomolecualr Dynamics...

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Biomolecualr Dynamics Assignment 1 Jonathon Nguyen 16323012 Question 1 a) Distinguish between zeroth-order, first-order, second-order, and pseudo-first- order reactions. Zeroth-order, first-order, second-order, and pseudo-first-order reactions are all reactions classes by their order. The order of reation is determined by to what power a concentration of a specific species is raised to in the rate law. A zeroth order is one that does not depend on the concentration of the species. The rate law for a zeroth order reaction is: r=k . A typical graph for a zeroth order reaction is: Concentration Time A first order reaction only depends on one concentration of a speices. The rate law for a first order reaction is r=k [ A ]. A typical graph for a first order reaction is: Concentration Time A second order reaction depends on the concentration of one or both of the reactants. The rate law for a second order reaction is r=k [ A ] 2 or r=k [ A ][ B ]. A typical graph for a first order reaction is: Biomolecular Dynamics Jonathon Nguyen 1

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Time A pseudo-first-order reaction is in between a first order reaction and a second order reaction. In a pseudo-first-order reaction, one concentration remains constant as the reaction proceeds . it is a pseudo-first-order reaction because only one of the concentrations is dependent. So a typical equation for a pseudo-first-order reaction would be r=k [ A ] [ B ]= k ’[ A ] where k ' = k [ B ] 0 . b) Explain clearly in chemical terms what you understand by the Michaelis- Menten mechanism. The Michaelis-Menten mechanism describes the kinetics of many enzymes. The equation for the Michaelis-Menten mechanism of an enzyme-catalysed reaction is: Where E is E is the enzyme, S the substrate, ES is the enzyme-substrate complex and P being the product. By applying steady-state approximation, ES can be solved and substituted into the equation
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## This note was uploaded on 06/15/2010 for the course AP 31239 taught by Professor Meher during the Spring '10 term at Acton School of Business.

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Biomolecualr Dynamics Assignment 1 - Biomolecualr Dynamics...

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