Choose the correct answer Question 30Which of the following is the Haworth Projection of Glucose?CH,OHонOHb) CH,OHOCH3OHонÓH) HOCH,ТонÓH ÓHd) HOCH2,CH2OHHOIC

The cyclic structure in Haworth projection displays the ring as flat. In the associated Haworth…

Answered: Which of the following is the Haworth…

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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QUESTION 26 During gluconeogenesis, whereby liver cells convert pyruvate to glucose, Fructose-6-phosphate (F6P) is converted to Glucose-6-phosphate (G6P). If the standard equilibrium concentrations are: [F6P] = 0.52 M and [G6P] = 1.48 M, then Keq’ is ______ and the reaction is ________. Fructose-6-P ó Glucose-6-P > 1; exergonic > 1; endergonic < 1; exergonic < 1; endergonic
QUESTION 5 Chymotrypsin is a pancreatic digestive enzyme that is inactive until it is secreted into the intestines, where it is hydrolyzed by the protease Trypsin. One of the fragments that results from this hydrolysis is the active form. This form of enzyme regulation is: Competitive activation O Allosteric inhibition Covalent modification O O Zymogen activation Allosteric activation
Question 5 Enolase catalyzes the conversion of 2-phosphoglycerate to phosphoenolpyruvate + water. The standard free energy change (AG for this reaction is +1.8 kJ/mol. If the concentration of 2-phosphoglycerate is 0.045 mM and the concentration of phosphoenolpyruvate is 0.034 mM the free energy change (AG) for the enolase reaction under these conditions is: Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a -4.14 kJ/mol -7.43 kJ/mol +5.05 kJ/mol +6.60 kJ/mol e +0.50 kJ/mol f -0.75 kJ/mol +1.08 kJ/mol h -2.52 kJ/mol None of the above
QUESTION 18 Stable molecules that resemble the transition state of enzyme catalyzed reactions are very potent inhibitors. Provide an explanation as to why these compounds are better than inhibitors based on the substrate. TT TT Paragraph v v 3 (12pt) = - E · T Arial T T, O Mashups 66 HTHL CSS CS Scanned with CamScanner
Question 29 Cationic exchange chromatography - used for positively charged proteins O True False
QUESTION 23 Digoxin, a toxin derived from the foxglove (shown), can be used to treat heart disorders such as atrial fibrillation. Digoxin's mechanism of action is to inhibit the Nat/K* ATPase. Which of the following is the most likely side effect of Digoxin treatment? Failure to transport glucose into cells during an extended fast Failure to transport glucose into cells after after eating a large meal Enhanced response of muscle cells to Acetylcholine Failure to transport Cl out of the cell using direct active transport 0000
QUESTION 38 In a 250µl reaction containing 0.3 nmol of a Michaelis enzyme with Km = 4.4 x 10 M and saturating substrate concentration, product was formed at an initial velocity of 6.3 x 10 M min-1. What is kcat for this enzyme? Give your answer in 3 sigfigs in scientific notation, for example 1.20 e -3 Click Save and Submit to save and submit. Click Save All Answers to save all answers. O Type here to search 78°F Mostly cloudy End 4) DII PrtScn F8 Home F9 F6 F2 F3 F4 *- & 7 8. 4. #3
QUESTION 14 There are two possible mutations in spike protein; G76V and V180G. Which of these two mutations is less likely to occur, from protein structural considerations. G76V V180G O O
Question 16 A glucometer measures the electrical current produced by the redox reaction catalyzed by glucose oxidase, which converts gluconolactone to glucose. True False
QUESTION 20 Trypsin digestion of the peptide sequence A2-P2-M3-E4-R5-G6-F7-Hg-Ag-I10-A11-H12-T13-Y14-G15-P16 results peptide fragment(s). in To elute the His-tag protein from the nickel agarose column, the elution buffer contains a high concentration of Chymotrypsin cleaves the N-terminus side of Phe, Tyr, and Trp. True O False
Question 9 The product of the oxidation of glyceraldehyde 3-phosphate is: O 2-phosphoglycerate O 1,3-biphosphoglycerate O phosphoenolpyruvate O fructose 1,6-biphosphate oxaloacetate Previc
Question 23 In determining glucose concentration using a glucometer, the test involves an enzymatic reaction. What is the enzyme which catalyzes the conversion of glucose to gluconolactone? O a. Glucose synthetase O b. Glucose oxidase O c. Glucose reductase O d. Glucose peroxidase

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