Answered: The most regulated enzyme in glycolysis…

Science

Biochemistry

The most regulated enzyme in glycolysis is a Hexokinase b G3P Dehydrogenase c Pyruvate Kinase d Phosphofructokinase

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

See similar textbooks

Related questions

Q: NADH is generated by all of the following Krebs cycle enzymes except: alpha-ketoglutarate…

A: Citric acid cycle, also known as Krebs cycle includes a series of chemical reactions used by…

Q: Which of the enzymes in glycolysis are NADH linked dehydrogenases?

A: Glycolysis is the first step in energy production from glucose. Carbohydrates from the food are…

Q: Pair the reactions mentioned on the left with the names of the enzymes on the right.…

A: Glycolysis is the process of conversion of one molecule of glucose into two molecules of pyruvate.…

Q: Which of the following is a negative regulator of the pyruvate dehydrogenase complex (PDC)? 1.…

A: Pyruvate dehydrogenase complex (PDC) : It converts pyruvate to acetyl CoA via pyruvate…

Q: What is the effect of a defective a(1→ 4) phosphatase in Pompe's disease (GSD II)? O Accumulation of…

A: Glycogen Storage Disease type II , also called Pompe's disease occurs to due to the deficiency of…

Q: Which enzyme catalyzes a freely reversible reaction? Pyruvate dehydrogenase Aconitase…

A: The citric acid cycle enzymes are membrane proteins present in the matrix of the mitochondria except…

Q: When glycogen is degraded (catabolized), all of the following occur in both liver and muscle EXCEPT…

A: Glycogenolysis is the process of breaking down the stored glycogen into simple sugar units. It…

Q: Which one of the following enzymes of glycolysis is regulated via product inhibition? O…

A: Product inhibition is the type of enzyme inhibition where the product of an enzymatic reaction…

Q: In the last step of glycolysis, phosphoenolpyruvate (PEP) is converted to pyruvate and during this…

A: Glycolysis - Glycolysis is the process by which one molecule of glucose is converted into two…

Q: Place the following molecules in the order in which they appear during aerobic respiration: Citrate…

A: Cellular respiration is a series of metabolic reactions and processes that occur within organisms'…

Q: Under conditions of the Cori Cycle, order the following enzymes in the relationship to their…

A: Cori cycle is a series of enzyme catalyzed reactions occurring in muscles and liver. Under anaerobic…

Q: A researcher has recently suggested that Pyruvate Dehydrogenase Complex could be source for acetate…

A: Introduction: A by-product of yeast alcoholic fermentation is acetate assumes a critical part in the…

Q: Which of the following is the third step of glycolysis? Select one: a. Glucose is converted to…

A: Glycolysis is the metabolic process through which glucose is converted into pyruvate. It is an…

Q: Choose the correct sequence of steps in glycolysis and oxidative phosphorylation Acetyl CoA - Krebs…

A: Glycolysis initiates the breakdown of glucose, generating NADH, which then contributes to oxidative…

Q: Name three metabolic pathways that can

A: Pyruvate dehydrogenase complex is a multienzyme complex. It is found only in mitochondria. The…

Q: Regarding pathways that feed glycolysis, which of the following statements is false? Mannose is also…

A: Answer :- Option (C) is correct. - Fructose is phosphorylated by hexokinase in muscle cells.

Q: Under conditions of strenuous activity (anaerobic) the product is: acetyl CoA pyruvate lactate

A: Ans- lactate

Q: A 28-year-old man experiences prolonged apnea following the administration of succinylcholine for…

A: Succnyl choline is given in patients that have to undergo tracheal intribution because it is a…

Q: One of the consequences of ethanol addiction is fattyliver disease, an illness in which liver cells…

A: NADH or “nicotinamide adenine dinucleotide (NAD) + hydrogen (H)” is a reduced form of molecule NAD+…

Q: Most defects in pyruvate dehydrogenase complex are due to mutations in ______, so supplements with…

A: Introduction Pyruvate dehydrogenase is a complex of enzymes that plays a critical role in aerobic…

Q: Which enzyme involved in the TCA cycle produces very similar outcomes compared to pyruvate…

A: The citric acid cycle is also known as the Krebs cycle or the tricarboxylic acid cycle. It is a…

Q: Which of the following reactions does NADH act as coenzyme? A. "glyceraldehyde-3-phosphate to…

A: NADH is biologically ranked and identified as coenzyme 1, the coenzyme or cofactor needed for…

Q: Which of the following is the ninth step of glycolysis? Select one: a. Fructose-1,6 Bisphosphate is…

A: Glycolysis is the first step of aerobic or anaerobic respiration that is the respiration occurring…

Q: Net moles of ATP produced by one mole of acetyl CoA entering the TCA cycle is: O 2 9 38

A: The TCA cycle, also known as the citric acid cycle or the Krebs cycle, is a series of chemical…

Q: Acetyl-SCOA A enzyme NADH B substrate substrate Aconitase NAD+ M enzyme C malate substrate NAD+…

A: A- Citrate synthase B- Citrate C- Isocitrate D- NAD+ E- NADH + H+ F- GDP + Pi G- GTP H- Succinate

Q: Of the allosteric enzymes listed below, which are suppressed by NADH? Select all that apply. the…

A: Enzymes catalyse biochemical reactions. Substrate binds to the enzyme's active site and is converted…

Q: Pyruvate can enter the TCA cycle via two enzymatic reactions. Provide a simplified schematic…

Q: Hexokinase is used to do which of the following steps of glycolysis? Select one: a. Glucose is…

A: Glycolysis is an important metabolic process, where glucose is broken down to form two molecules of…

Q: Acetyl CoA reacts with what molecule in which pathway to become citrate? O glycolysis, Malate krebs…

Q: Pyruvate dehydrogenase can be activated by

A: Introduction Pyruvate dehydrogenase(PDH) is an enzyme complex of three individual enzymes along with…

Q: Match the enzyme to the reaction catalysed. Not all the enzymes have to be selected, and an enzyme…

A: Enzymes acts as a catalyst in a reaction as it lowers the activation energy required for the…

Q: Which one of the following pairs of compounds are joined together to conserve carbon in the…

A: Bacteria and plants subsist on acetate yielding acetyl CoA. They use a metabolic pathway absent in…

Q: When the acetyl-CoA produced during ß-oxidation in the liver exceeds the capacity of the citric acid…

A: When there is an accumulation of acetyl CoA in the cell due to excessive beta-oxidation, ketone…

Q: Choose all of the molecules that are made in acetyl-CoA formation and the citric acid cycle that are…

A: Introduction The Krebs cycle, often referred to as the TCA cycle (tricarboxylic acid cycle), and…

Q: Fluoride is an inhibitor of which of the following glycolytic enzymes? A. Glyceraldehyde 3 po4…

A: Glycolysis is the process of breakdown of glucose into pyruvate to generate energy.

Q: Which of the following are correct responses to low cellular energy charge? Choose all that apply. b…

A: The Cells face that is the related problem when they are the break down the fuels, such as the…

Q: Which of the following enzymes is present in mitochondria? O Acid phosphatases O Pyruvate…

A: Mitochondria are membrane-bound cell organelles which are involved in the generation of energy…

Q: Which enzyme uses ATP to phosphorylate a substrate during glycolysis?

A: The process of breakdown of a molecule of glucose into two molecules of pyruvate is termed…

Q: Which reactions in the payoff phase of glycolysis are endergonic at standard conditions? O…

A: Glycolysis is the first phase of both aerobic and anaerobic respiration which converts one molecule…

Q: Which of the following glycolytic enzymes catalyzes the conversion of fructose-6-phosphate into…

A: Glycolysis is the process in which sequence of metabolic reaction convert glucose into energy. In…

Q: Which enzyme is used for both the synthesis and breakdown of acetoacetate? thiolase O HMG-CoA…

A: Proteins that catalyse chemical reactions in living organisms are known as enzymes. They function as…

Q: The glycolytic enzyme pyruvate kinase catalyzes the conversion of: 1,3-bisphosphoglycerate into…

A: Glycolysis is a metabolic pathway that converts one molecule of glucose to two molecules of…

Q: Glucose-6-phosphate isomerase is used to do which of the following steps of glycolysis

A: The metabolic pathway where glucose is converted into pyruvic acid is known as glycolysis. These…

Q: Amino Fatty acids acids Glucose Pyruvate Oxaloacetate Acetyl-CoA Glycolysis CO₂ NADH Acetyl-CoA…

A: Metabolism is a term that is used to describe all chemical reactions involved in maintaining the…

Question

The most regulated enzyme in glycolysis is

a		Hexokinase
b		G3P Dehydrogenase
c		Pyruvate Kinase
d		Phosphofructokinase

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

Which of the following enzymes is the key regulatory step in glycolysis? Phosphofructiokinase-1 is the answer. Explain? A. Phosphoglucose Isomerase B. Phosphofructokinase-1 C. Pyruvate Kinase D. Hexokiase E. Phosphofructokinase-2 ...Why is Phosphoglucose Isomerase wrong?
Identify the conversion which is not involved in glycolysis. a.Glucose to glucose 6-phosphate by hexokinase b.Triose phosphate to 2-phosphoglycerate by phosphoglyceromutase c.PEP to pyruvic acid by pyruvate kinase d.Sucrose to glucose and fructose by invertase
Which of the following is TRUE? O Both AMP and ADP are negative regulators of glycogenolysis. ATP shifts the curve of glycogen phosphorylase to the left. O Citrate binds covalently to acetyl CoA carboxylase. Phosphofructokinase-1 is an allosterically regulated enzyme in glycolysis. The carnitine shuttle is positively regulated by Malonyl CoA.
During which of the following conversions is NADH+H+ formed in the glycolysis cycle? a. Glyceraldehyde 3-phosphate to 1,3-bisphosphoglycerate b. 1,3-bisphosphoglycerate to 3-Phosphoglycerate c. 2-Phosphoglycerate to Phosphoenolpyruvate d. Phosphoenolpyruvate to Pyruvate
During Krebs cycle, the conversion of isocitrate to alpha-keto glutarate involves all of the following reactions/mechanisms except Reduction of isocitrate Reduction of NAD+ Decarboxylation of isocitrate Oxidation of isocitrate
Which of the following conditions is most likely to lead to the activation of pyruvate dehydrogenase? High concentrations of acetyl-CoA High concentrations of NADH High concentrations of NAD+ High concentrations of CO2
In glycolysis, pyruvate kinase produces what high energy product and what low energy product?
Which of the following enzymes do not catalyze a reaction in the citrate cycle that produces CO2 as a product? Choose one or more: OA. isocitrate dehydrogenase OB. fumarase L C. succinate dehydrogenase O D. succinyl-CoA synthetase
Which of the following Krebs cycle enzymes generates a molecule of FADH2 from FAD? a-ketoglutarate dehydrogenase pyruvate dehydrogenase isocitrate dehydrogenase malate dehydrogenase succinate dehydrogenase
What type of regulation would be expected when anaerobic metabolism is occurring in the muscle? Select all that apply. 1. Activation of pyruvate dehydrogenase kinase 2. Increased levels of calcium to activate pyruvate dehydrogenase phosphatase 3. Phosphorylation of pyruvate dehydrogenase 4. Inhibition of pyruvate dehydrogenase complex 5. Increased levels of NADH to activate citrate synthase 6. Increased levels of NADH to inhibit alpha-ketogluterate dehydrogenase complex 7. Increased levels of acetyl CoA to activate pyruvate carboxylase for gluconeogenesis
Gluconeogenesis occurs in liver and kidney. Which is of the following enzyme are important for gluconeogenesis are expressed exclusively in these tissues? Select one: a. Glucose-6-phosphatase b. Fructose-1,6-Bisphosphatase c. Phosphoenolpyruvate carboxykinase d. Pyruvate carboxylase
in the mitochondria pyruvate is converted into acetyl CoA so then acetyl CoA make its way to the TCA cycle and produces energy sources for oxidative phosphorylation. Pyruvate oxidation transforms pyruvate, a three-carbon molecule, into acetyl, a two-carbon molecule linked to Coenzyme A, generating NADH and releasing one carbon dioxide molecule in process the citric acid cycle is fundamental because runs on acetyl CoA as its fuel. i need more explanantion