Connect 1-Semester Online Access for Principles of General, Organic & Biochemistry
2nd Edition
ISBN: 9780077633707
Author: Janice Smith
Publisher: Mcgraw-hill Higher Education (us)
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Chapter 18.4, Problem 18.9P
Interpretation Introduction
Interpretation:
All reaction of glycolysis process that utilizes kinases has to be determined. Also, species that are phosphorylated in these reactions have to be determined.
Concept Introduction:
Enzymes are proteins that serve as biological catalysts for biochemical reactions in organisms. They can enhance
(1) Hydrolase: Enzyme that catalyzes hydrolysis reaction. They can be subdivided into lipase that hydrolyzes ester bond in lipids and proteases that hydrolyze proteins.
(2) Dehydrogenase: Enzyme that catalyzes dehydrogenation reaction.
(3) Oxidases: Enzymes that catalyze oxidation reactions.
(4) Kinase: Enzymes that catalyze transference of phosphate groups.
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Kinases are enzymes that catalyze the addition (or removal) of a phosphate group to ( or from) a substance. ATP is also involved. How many kinases are in glycolysis? Name them.
The enzyme 6-phosphogluconate dehydrogenase is part of the pentose pathway
for glucose oxidation. What enzyme that is involved in glucose oxidation by the
citric acid cycle has a very similar reaction mechanism to 6-phosphogluconate
dehydrogenase?
A) isocitrate dehydrogenase
B) alpha-ketoglutarate dehydrogenase
C) succinate dehydrogenase
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(99+
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a
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What is the main aspect that the enzymes succinyl-CoA synthetase, pyruvate kinase, and phosphoglycerate kinase have in common?
Chapter 18 Solutions
Connect 1-Semester Online Access for Principles of General, Organic & Biochemistry
Ch. 18.1 - Prob. 18.1PCh. 18.2 - Prob. 18.2PCh. 18.2 - Prob. 18.3PCh. 18.2 - Prob. 18.4PCh. 18.3 - Prob. 18.5PCh. 18.3 - What makes riboflavin a water-soluble vitamin?Ch. 18.3 - Prob. 18.7PCh. 18.4 - Identify the type of carbonyl groups present in...Ch. 18.4 - Prob. 18.9PCh. 18.4 - Prob. 18.10P
Ch. 18.5 - Prob. 18.11PCh. 18.5 - (a) In what way(s) is the conversion of pyruvate...Ch. 18.6 - Prob. 18.15PCh. 18 - Prob. 18.31UKCCh. 18 - Prob. 18.32UKCCh. 18 - When a substrate is oxidized, is NAD+ oxidized or...Ch. 18 - When a substrate is reduced, is FADH2 oxidized or...Ch. 18 - Prob. 18.35UKCCh. 18 - Prob. 18.36UKCCh. 18 - Prob. 18.39UKCCh. 18 - Prob. 18.40UKCCh. 18 - Prob. 18.41UKCCh. 18 - Prob. 18.42UKCCh. 18 - Prob. 18.45APCh. 18 - What is the difference between metabolism and...Ch. 18 - Prob. 18.47APCh. 18 - Prob. 18.48APCh. 18 - Prob. 18.49APCh. 18 - Prob. 18.50APCh. 18 - Prob. 18.51APCh. 18 - Prob. 18.52APCh. 18 - Prob. 18.53APCh. 18 - Classify each substance as an oxidizing agent, a...Ch. 18 - Prob. 18.55APCh. 18 - Prob. 18.56APCh. 18 - Prob. 18.58APCh. 18 - What is the role of each of the following in the...Ch. 18 - Prob. 18.71APCh. 18 - Prob. 18.72AP
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- The rate-limiting step is a metabolic pathway is the slowest step which determines the overall rate of the other reactions in the pathway. In glycolysis, the rate limiting step is a phosphorylation reaction where phosphofructokinase (PFK-1) catalyzes the reaction fructose-6-bisphosphate -> fructose-1,6-bisphosphate, the same step in gluconeogenesis. Select one: The statement is FALSE. The statement is TRUE.arrow_forwardTPP is a coenzyme for transketolase, the enzyme that catalyzes the conversion of a ketopentose (xylulose5-phosphate) and an aldopentose (ribose-5-phosphate) to an aldotriose (glyceraldehyde-3-phosphate) and a ketoheptose (sedoheptulose-7-phosphate). Notice that the total number of carbons in the reactants and products is the same (5 + 5 = 3 + 7). Propose a mechanism for this reaction.arrow_forwardATP Synthase in plants has the same basic structure and function as the ATP Synthase in humans. O True O Falsearrow_forward
- What class of enzymes to these two belong to?arrow_forwardAnaerobic glycolysis (i.e., lactic acid fermentation) produces pyruvate that is then converted to lactate through the activity of lactate dehydrogenase. The conversion of pyruvate to lactate would seem to be an unnecessary step, since this process does not result in any further release of energy. Explain the necessity for the production of lactate as the endpoint for anaerobic glycolysis.arrow_forwardThe enzyme that catalyzes reaction below can be classified as: NAD* NADH + H* Но- H-Ć- Н—с—н H- malate dehydrogenase Oxaloacetate Malatearrow_forward
- Jj.66.arrow_forwardAll of the following enzymes regulate glycolysis except? Phosphofructokinase Phosphoglycerate kinase Hexokinase Pyruvate kinase Question 6 ( Which of the following enzymes is regulated by the concentration of glucose 6-phosphate? Hexokinase Phosphoglycerate kinase Pyruvate kinase Phosphofructokinasearrow_forwardWhen the following reaction reached equilibrium the concentration of glucose 1-phosphate is 34mM, and the concentration of glucose 6-phosphate is 190mM. At standard temperatures and pressure, calculate the Keq and the ΔGo' glucose 6-phosphate <---(phosphoglucoisomerase)---> glucose 1-phosphate Keq= ΔGo' =arrow_forward
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