QUESTION 21Match the following metabolic reactions or components with their corresponding cellular locations?✓Malate oxidation✓ The isomerization of G6P into F6P✓ Cytochrome C✓ The conversion of pyruvate into acetyl-CoASuccinate oxidation into fumarate.The substrate-level phosphorylation reaction that also producespyruvate✓ The accumulation of protons due to the electron transport✓ The reduction of O2 into H₂0A. The intermembrane space of the mitochondriaB. The matrix of the mitochondriaC. The cytosolD. The inner membrane of the mitochondria QUESTION 6The first phosphorylation in glycolysis serves all of the following functions EXCEPT:O Allowing for tissue-specific regulation of sugar metabolismO Committing the sugar for glycolysisO Activating the sugar for further chemical changesO Retaining the sugar for cellular use

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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 1: The 4 kinase steps in glycolysis are catalyzed by hexokinase, phosphofructokinase, phosphoglycerate kinase, and pyruvate kinase. Write each of these four reactions, including all participants. i. ii. iii. iv.
Question 1: The overall process enabled by the glyoxylate cycle is: (2acetyl-CoA) + (NAD+) + (2H2O) → (succinate) + (2CoA) + (NADH) + (2H+) Dissect this process further by writing down all of the reactions that are actually involved in making one succinate from two acetyl-CoA units. Show chemical structure for all intermediates.
QUESTION 47 The role of oxygen gas in our cells is to accept electrons that come from NADH. produce CO2. react with glucose to split water. catalyze reactions in glycolysis. breakdown ATP.
QUESTION 22 When the final product of a series of enzymatically-catalyzed reactions binds to the first enzyme in the pathway to limit its production, it generally uses ___ because the structure of this final product is generally not similar to that of any of the enzyme's normal substrates. Allosteric activation Zymogen activation Covalent modification Competitive inhibition Allosteric inhibition
Question 1: ATP synthases contains 3 copies of each of the large subunits (called α and β in the E. coli enzyme). The number of c subunits can vary among different ATP synthases, ranging from 8 to 17. Part a: Briefly explain how this variation in the number of c subunits would affect the energetics of ATP synthesis. For a fixed value of the protonmotive force, how much energy can the gradient provide to drive one revolution of the ATP synthase, in a synthase with 8 c- subunits versus a synthase with 17 c-subunits?
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 3 Without oxygen (O2) present, glycolysis normally cannot continue because: There is no more NAD+ being produced The mitochondria die from lack of oxygen O2 is used up during glycolysis enzymes can only function if O2 is present ATP formation requires O2
Question 94 Most of the CO2 from the catabolism of glucose is released during _____. electron transport chemiosmosis glycolysis the citric acid cycle
Question:- 33) Glucose-6-phosphate has different pathways that it can enter in the liver during the fed state. All of the following are possible except OA.) it is oxidized to acetyl CoA for fatty acid biosynthesis O B). it can enter the pathway for glycogen biosynthesis O c.) it is a substrate for glucose-6-phosphatase OD. )it is oxidized in glycolysis to provide energy for the body
Question No. 1 Give the advantages and disadvantages of submerged fermentation and solid state fermentation. Give two examples of acetic acid fermentation.
Question 1: In some microorganisms, carbon fixation occurs by reversal of the citric acid cycle. This reversal is accomplished in part by the use of a strong reductant (ferredoxin) to drive the alpha-ketoglutarate dehydrogenase reaction in the reductive direction. Part a: ΔG°‘ for reaction as it occurs in the ‘normal’ (oxidative) citric acid cycle is -30.1 kJ/mol. The standard reduction potential for NADH is -0.32 V. In order to drive the reaction in the reverse direction, the reductant (a ferredoxin) must have a lower reduction potential than NADH/NAD+. Remembering that this is a two-electron reduction, and using the numbers given just above, compute the value of the ferredoxin reduction potential that would be needed to make the standard free energy zero (so that the reductive reaction is enegetically just as favorable as the oxidative reaction). Assume that all of the other reactants are the same in the reductive as in the oxidative reaction. Write out the steps in your calculation;…
QUESTION NO. 1L-Carnitine is synthesized primarily in the liver but also in the kidneys and then transported to other tissues. It is most concentrated in tissues that use fatty acids as their primary fuel, such as skeletal and cardiac muscle. In this regard, L-carnitine plays an important role in energy production by conjugating to fatty acids for transport from the cytosol into the mitochondria. L-carnitine shuttle is an example of A. ion driven active transport B. facilitated diffusion C. simple diffusion D. ATP driven active transportE. symport F. antiportQUESTION NO.2 Statements: (1) Glucose is both a hexose and a aldose. (2) There can never be more than three enantiomers for a molecule. (3) All common disaccharides have beta-one-four linkages. Which statements are true?

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