Enzymology Guides d'étude, Notes de cours & Résumés

Catalyst - 1. Chemical or biological substance or structure that lowers activation energy 2. Accelerates the rate of a chemical rxn Enzymes - Biological catalysts that are capable of performing multiple rxns (are recycled). They can be proteins or RNA, are faster than chemical catalysts, and act under mild conditions (bodily temperature/pressure). They are highly specific and tightly regulated. Enzyme functions - - cell shape and motility - surface receptors - metabolism - cell cycling ...

Which of these statements is correct? A) A catalyst decreases the activation barrier by different amounts for the forward and reverse reactions. B) A catalyst decreases the activation barrier by the same amount for both the forward and reverse reactions. C) A catalyst increases the activation barrier by different amounts for the forward and reverse reactions. D) A catalyst increases the activation barrier by the same amount for both the forward and reverse reactions. E) A catalyst does ...

Enzymology catalyst Questions & answers

Enzymology Exam 1 study guide Questions & answers

A summary of the practical reader of the course Enzymology (BIC20806), useful for the practical exam.

Physiology - - The study of function Homeostasis - - maintenance of the same state - maintaining order - requires energy and a means to utilized the energy Glucose Fatty Acids Amino Acids Volatile Fatty Acids Ketone - - Sources of energy

enzymes increase reactions by lowering the activation energy-which is the energy needed to go from the reactant to the transition state. The transition state is called the enzyme substrate complex - function of enzymes Classes of enzymes: oxidoreductase-oxidation/reduction reactions, transferase-group transfer reaction, hydrolase-hydrolytic reactions, lyase- cleavage of C-C C-S C-N bonds, isomerase- isomerization, ligase-condensation of two molecules coupled with cleavage of ATP. - class of...

Enzyme - A PROTEIN that acts as a biochemical CATALYST by affecting the rate at which a reaction proceeds. Substrate - The material acted on by the enzyme Product - The material produced as the result of an enzyme acting upon a substrate. 1. Enzyme binds to substrate at their active site 2. [ES] complex brings substrate molecule into proper alignment with enzyme 3. Products are formed and the free enzyme can combine with excess free substrate 4. The enzyme is not altered or consumed in th...

Basic Enzymology QUESTIONS & ANSWERS

Enzyme Kinetics and Km - correct answer-The reaction catalysed by an enzyme uses exactly the same reactants and produces exactly the same products as the uncatalysed reaction. Like other catalysts, enzymes do not alter the position of equilibrium between substrates and products. Enzyme-catalysed reactions display saturation kinetics: For a given enzyme concentration and for relatively low substrate concentrations, the reaction rate increases linearly with substrate concentration; the enzym...