MBB 222 Lecture 17: Lecture 17, 18 notes

10 views12 pages

graysea-lion876

12 Mar 2022

School

Simon Fraser University

Department

Molec Biol & Biochem

Course

MBB 222

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

Abriefreview and further introductionto enzymes proteinsdomost of work in the ceil theywork byinteractingwiothermole they areessentialfor life andnecessaryfor an cei processes. Enzymes almosteverybiochemical run is catalyzed by an enzyme. Enzymeshaveextraordinary catalyticpower ishighlyspecific inacceleration of chemical run in act in aqueousenvironments w mildtemp and ph physiological conditions w the exception of catalyticrivas ribozyme au enzymes are protein classification of enzymes. Mostenzymes catalyze the transfer of e atoms or functional group. Theyare therefore classified according to thetype of transfer ran the groupdonor the groupacceptor. Manyenzymenameshave exdivapolymerasecatalyzes the polymerization of dna ase urease catalyzes the hydrolysis of urea. Enzymesenhance rates by lowering out theactivation e for the transition statet. Og is the activation e barrier bit s and p. E required for alignment ofreacting groups formation oftransientunstablecharges bondrearrangement and other changes for the run to proceed in either direction some generalstrategies for enzyme catalysis. Someenzymes function to bring substrates into closeproximity and inthe correct orientation to allowwins to occur.

Related Questions

From the following statements select all that are true.

Question 6 options:

A)	All enzymes are proteins.

B)	All proteins are enzymes.

C)	Enzymes in our bodies function as biological catalysts.

D)	Biological catalysts speed up rates of chemical reactions.

E)	If an enzyme slows down a chemical reaction it is called an allosteric inhibitor.

F)	Many inorganic divalent cations like iron (Fe²⁺), zinc (Zn²⁺) and magnesium (Mg²⁺) are essential for our survival in part because they function as cofactors that activate enzymes in our bodies.

G)	Enzyme inhibitors retard an enzyme's activity and an inhibitor can be classified as a non competitive inhibitor if its effects on the enzyme's activity can be overcome simply by adding more substrate to the system.

Which three of the following statements correctly describe enzymes? Check all the true statements.

1. Enzymes accelerate reactions by increasing the activation energy.

2. Enzymes have specific three-dimensional shapes.

3. Enzymes are carbohydrate molecules.

4. The active site of an enzyme binds a reactant.

5. An enzyme makes a reaction more likely by lowering the energy of the products.

6. Enzymes catalyze biological reactions.

Each of the following enzymes is required for replication in E.coli. With on exception, the enzymes on this list catalyzereactions in which phosphodiester bonds are created and/or broken(hydrolyzed). Which of these enzymes does not do so:

a. DNA polymerase I

b. DNA polymerase III

c. Helicase

d. Topoisomerase/gyrase

e. Primase

orchidgnat94

MBB 222 Lecture 17: Lecture 17, 18 notes

Document Summary

Get access

Related Documents

MBB 222 Lecture Notes - Lecture 13: Insulin Receptor, Pilin, Activation Energy

BIOC 403 Study Guide - Alanine, Epimerase And Racemase, Pyrophosphate

BIOLOGY 2EE3 Final: Biology 2EE3 Exam Review.docx

Related Questions