Give typed explanation of all otherwise leave it What is NOT true about the energetics of glycolysis and gluconeogenesis?O gluconeogenesis is inhibited during intense exerciseO only energy releasing reactions will give a net yield of productO glycolysis has a net direct yield of two ATP's whereas gluconeogenesis uses 2 ATP'sO in gluconeogenesis, glycolysis enzymes with a highly negative AG are replacedO a reaction must have a negative AG to proceed in the forward directionWhat is NOT true about the conversion of one six carbon hexose into two three carbon trioses inglycolysis?O Starting with glyceraldehyde 3-phosphate, each further step in glycolysis involves two identical, three carbonmoleculesO one glucose is converted into two identical molecules of glyceraldehyde 3-phosphateO Aldolase catalyzes a reaction in which a six carbon substrate is split into a three carbon aldehyde and a threecarbon ketoneO triose phosphate isomerase converts a ketone into an aldehydeO The reactions in this part of the pathway involve oxidation/reductionWhat is NOT true about glycogen breakdown?O Phosphorylase a cannot attack glucose units that are near to 1,6- branch pointsO The enzyme phosphorylase a attacks the non-reducing ends of glycogenO The enzyme phosphorylase a catalyzes the release of glucose-1-PO the product of phosphorylase a attack enters directly into glycolysis without further modificationO it takes two enzymes to convert the 1,6-branches into additional linear 1,4-linked glucose units

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What is NOT true about the energetics of glycolysis and gluconeogenesis? O gluconeogenesis is inhibited during intense exercise O only energy releasing reactions will give a net yield of product O glycolysis has a net direct yield of two ATP's whereas gluconeogenesis uses 2 ATP's O in gluconeogenesis, glycolysis enzymes with a highly negative AG are replaced O a reaction must have a negative AG to proceed in the forward direction

What is NOT true about the energetics of glycolysis and gluconeogenesis? O gluconeogenesis is inhibited during intense exercise O only energy releasing reactions will give a net yield of product O glycolysis has a net direct yield of two ATP's whereas gluconeogenesis uses 2 ATP's O in gluconeogenesis, glycolysis enzymes with a highly negative AG are replaced O a reaction must have a negative AG to proceed in the forward direction

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter27: Metabolic Integration And Organ Specialization

Section: Chapter Questions

Problem 20P: Figure 27.3 illustrates the response of R (ATP-regenerating) and U (ATP-utilizing) enzymes to energy...

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Figure 27.3 illustrates the response of R (ATP-regenerating) and U (ATP-utilizing) enzymes to energy charge. a. Would hexokinase be an R enzyme or a U enzyme? Would glutamine: PRPP amidotransferase, the second enzyme in purine biosynthesis, be an R enzyme or a U enzyme? b. If energy charge = 0.5: Is the activity of hexokinase high or low? Is ribose-5-P pyrophosphokinase activity high or low? c. If energy charge = 0.95: Is the activity of hexokinase high or low? Is ribose-5-P pyrophosphokinase activity high or low?
Question 8: The following table shows the glycolysis reactions and their standard Gibbs free energy changes at 25 C. Answer the following questions: A. What is the Gibbs free energy expression of the glycolysis pathway? B. What is the overall reaction of the glycolysis pathway? C. Suppose that the physiological concentrations of some metabolites are known as follows:
Glycolysis and Krebs cycle pror TWGPalygXphYW9-zKh7Bt-bdNc75nprw176dBUWOA mResponse 23. Select the situation that will NOT happen if ATP synthase is not functioning. O A. Damage to the chemiosmosis process. B. The number of ATP produced is reduced. C. ATP can be produced through oxidative phosphorylation. D. Accumulation of proton ions in the intercellular membrane. 24. Oxidation of organic compounds that produced carbon dioxide, water and release of free energy causing reduction of the final acceptor molecule: oxygen. Justify the reason. ray bonds than those in
C000 C000 NADH NAD -NADH NAD* oco, NAD Oco,- FADH NADH FAD ATP ADP+,P Select the conclusion that would most accurately explain the impact on the Krebs Cycle if glycolysi were to slow down its rate of reaction. ATP production would increase since glycolysis would be using less ATP. The Krebs cycle production of FADH2 would increase. O The Krebs cycle would continue to function at a normal rate. O The Krebs cycle production of NADH would decrease.
Which statement is FALSE concerning glycolysis? Group of answer choices It is activated by high [AMP]. It results in a net synthesis of ATP. It results in the synthesis of NAD+. None of the 11 intermediates in the glycolytic pathway are phosphorylated.
Different enzymes that catalyse the same reaction are called O A. isoenzymes O B. holoenzymes O C. cofactors O D. coenzymes O E. agonists Which statement concerning the glycolytic and gluconeogenic pathways is correct? O A. Both are catabolic. O B. Both are anabolic. O C. Gluconeogenesis is catabolic while glycolysis is anabolic. O D. Gluconeogenesis is anabolic while glycolysis is catabolic. O E. Gluconeogenesis occurs in brain and glycolysis occurs in muscle. In lactic acid fermentation, which substance is oxidized and which is oxidized? O A. Lactate is reduced and NAD* is oxidized. OB. Lactate is reduced and pyruvate is oxidized. OC. Pyruvate is reduced and NADH is oxidized. O D. NADH is reduced and pyruvate is oxidized. O E. Lactate is oxidized and NADH is reduced.
ATP and NADH are the ------ of-3 * aerobic glycolysis Non of the above O Activators Inhibitors All of the above O
What is the main enzyme that serves as the control point in the regulation of glycolysis? Hexokinase O Phosphoglyceromutase O Pyruvate kinase O Phosphofructokinase O Isomerase
Match group A with group B: Group A Group B ATP synthase that makes ATP, is a Pyruvate part of Transfers the electrons from cyt c to O2 NADH Both glycogen synthesis and glycogen +NAD breakdown share the metabolite Glucose converted into two of these ТСА суcle molecules a-ketoglutarate dehydrogenase ETC inhibited by The central catabolic pathway is Ubiquinone Cytochrome c oxidase Glucose-1- phosphate
The enzyme is considered to be alan * ÇOO ÇOO Lactate dehydrogenase HO-C-H+ NAD C=0 + NADH + H CH: Pyruvate Lactate O Oxydoreductase O Isomerase O Hydrolase O Ligase O Dehydratase
Glycolysis is the central metabolic pathway for any cell (prokaryotic or eukaryotic) to generate energy. The primary reactant that enter glycolysis is , and the process generates 2 (= reduced (= 3 carbon molecules.) co-enzyme, electron carrier molecule), and 2 Glucose (energy carrier molecule), 2 2 NAD+ 2 ADP 2NADH 2ATP Zw Pyruvate ●●● Pyruvate
This figure depicts the energy investment phase of glycolysis. Enzymes catalyzing the reactions are numbered 1-5. PROCESS: GLYCOLYSIS ATP reac HOCH₂ М OH H Н glucose H Но -O H OH OH 2P Localon ne T 2 NAD P OCH H 6 Но ADP. 2 NADH H OH H + 0 H OH Н 2 POC=0 HCOH I H₂CO P which com Н OH P OCH, 2 ADP H OT О Н НО Но 2 АТР Н H.COH C=O ATP 2011 Pearson Education, Inc This figure depicts the energy payoff phase of glycolysis. Reactions are numbered 6-10. HCOH H₂CO P you isomie 12000 OH POCH₂ H ADP . НО О Н НО H H 2 H₂CO P О О C=O HCO P H₂COH OH (4 POCH, H, OOH CO H c=0 HCOM . H₂CO P О c=0 CO P 11 CH₂ 2 ADP -- 10 nge? 6. Which enzyme (1-10) catalyzes the reaction that gives glycolysis its name? 2 0 0 НИЕ 0=0 CH₂ pyruvate 2 ATP 4. For each glucose molecule catabolized, what are the total or gross products at the end of the glycolysis? 5. What are the NET products of the entire glycolysis pathway from each glucose molecule fully catabolized?