MULTIPLE CHOICE- Please answer properlyQUESTION :Supposed you want to use phosphoglucomutase tobreakdown glycogen. You found out that this enzymeis responsible for converting glucose l-phosphate(C6H1309P) to glucose-6-phosphate (C6H1309P).Based on this action, to which enzyme class doesphosphoglucomutase belong?A. IsomeraseB. OxidoreductaseC. LyaseD. Ligase

The enzymes can be classified into various categories based on their functions.

Answered: QUESTI Supposed you want to use…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Proteases are one of the main drug targets. Choose the False statement regarding proteases. A. Proteases are enzymes that cleave peptide bonds. B. Water is a reactant in the reaction catalyzed by proteases. C. Proteases, like all enzymes show substrate specificity, meaning they cleave only substate that fit the bonding product. D. Proteases rely on the proton transfer from NADH to the substrate. E. Protease mechanism involves only acid-base catalysis.
A7) Name the two enzymes that conduct substrate-level phosphorylation during glycolysis
The enzyme phosphoglycerate mutase promotes which of the following? a. the hydrolysis of 3-phosphoglycerate b. the isomerization of 3-phosphoglycerate c. the oxidation of 3-phosphoglycerate d. the reduction of 3-phosphoglycerate
Which of the following enzymes is NOT required to glycogen synthesis? a. branching Enzymes b. UDP-glucose pyrophosphorylase c. glycogen synthase d. glycogen phosphorylase
What type of inhibition is observed from the shift of the Lineweaver-Burke plot ahown in the graph below where the solid Ine represents the uninhibited enzymatic reaction while the broken line represents the inhibited enzymatic reaction? A. Irreveraible inhíbítion B. Noncompetitive inhíbition C. Competitive inhíbition D. Uncompetitive inhibition Potassium cyanide ia a polson which combines with cytochrome A3 to prevent binding of oxygen to the enzyme without altering the Km of the reaction with respect to reduced cytochrome c. Which type of inhibition does this represent? A. Irreveraible inhibition c. Competitive inhibition D. Uncompetitive inhibition B. Noncompetitive inhibition _10. Which of the following enzyme classes catalyze reactions in which two molecules become dissociated from each other? A. Kinase в. Нуdrolase c. Isomerase D. Ligase Which of the following enzyme classes catalyze reactions in which two molecules become covalently linked to each other? A. Kinase B. Hydrolase…
Which of the following is NOT TRUE about fatty acid biosynthesis? A. 8 NADPH is used to produce palmitate. B. The growing fatty acid chain is elongated by the sequential addition of two-carbon units. C. The process is repeated 7 times to produce palmitate. D. The process occurs in the cytosol.
Define the following terms: a. HSL b. CGI-58 c. fatty acid-binding protein d. β-oxidation e. carnitine
In Yeast, pyruvate can be directly converted into: A. acetyl-CoA and ethanol B. acetyl-CoA only C. lactate only D. ethanol only
Which of the following is a degradation product of both cytidine and deoxycytidine? a. β-alanine b. β-aminoisobutyrate c. succinyl-CoA d. uric acid
Which residue of phenylalanine hydroxylase is phosphorylated? A. Met18 B. Ser16 C. Ser12 D. Tyr24
There are three different types of SOD enzymes in the human body named SODI, SOD2 and SOD3. The most important is SOD1. b. (i) Describe the structure of SOD1. (ii) Describe the active site of this enzyme clearly indicating the metal ions involved, their coordination numbers, the geometry around the metal ions and the names of the amino acids directly coordinated to these metal ions. (iii) What is the role of each metal ion? (iv) Draw and explain the catalytic cycle for the conversion of the superoxide anion.

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