Pentose production is increased in (A) HMP shunt (B) Uromic acid pathway (C) EM pathway (D) TCA cycle

1 Answer

Answer :

A

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Description : Our body can get pentoses from (A) Glycolytic pathway (B) Uromic acid pathway (C) TCA cycle (D) HMP shunt

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Description : The most important source of reducing equivalents for FA synthesis on the liver is (A) Glycolysis (B) HMP-Shunt (C) TCA cycle (D) Uronic acid pathway

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Description : An amphibolic pathway among the following is (A) HMP shunt (B) Glycolysis (C) Citirc acid cycle (D) Gluconeogenesis

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Description : The first pentose formed in HMP shunt is (A) Ribose-5-phosphate (B) Ribulose-5-phosphate (C) Xylose-5-phosphate (D)Xylulose-5-phosphate

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Description : Two important byproducts of HMP shunt are (A) NADH and pentose sugars (B) NADPH and pentose sugars (C) Pentose sugars and 4 membered sugars (D) Pentose sugars and sedoheptulose

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Description : The four membered aldose sugar phosphate formed in HMP shunt pathway is (A) Xylulose P (B) Erythrulose P (C) Erythrose P (D) Ribulose P

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Description : What is the purpose of HMP shunt pathway?

Last Answer : It generates NADPH.

Description : What is the hormonal control over HMP shunt pathway? 

Last Answer : Insulin stimulates the pathway by activating the key enzyme.

Description : What are the tissues in which HMP shunt pathway is significant?

Last Answer : Liver, adipose tissue, RBC, adrenal cortex, ovary, testis, mammary gland, lens.

Description : HMP shunt pathway use how much glucose?

Last Answer : About 10% of glucose molecules per day are entering in this pathway. 

Description : Citrulline is an intermediate of (A) TCA cycle (B) Urea cycle (C) Pentose cycle (D) Calvin cycle

Last Answer : Answer : B

Description : One molecule of glucose gives ______ molecules of CO2 in EM-TCA cycle. (A) 6 (B) 3 (C) 1 (D) 2

Last Answer : A

Description : The main source of reducing equivalents (NADPH) for lipogenesis is (A) Pentose phosphate pathway (B) Citric acid cycle (C) Glycolysis (D) Glycogenolysis

Last Answer : Answer : A

Description : NAD is required as a conenzyme in (A) Citric acid cycle (B) HMP shunt (C) β-Oxidation of fatty acids (D) Both (A) and (C)

Last Answer : Answer : D

Description : NADP is required as a coenzyme in (A) Glycolysis (B) Citric acid cycle (C) HMP shunt (D) Gluconeogenesis

Last Answer : Answer : C

Description : Most of the metabolic pathways are either anabolic or catabolic. Which of the following pathways is considered as “amphibolic” in nature? (A) Glycogenesis (B) Glycolytic pathway (C) Lipolysis (D) TCA cycle

Last Answer : D

Description : The rate of HMP shunt reactions is (A) Increased by Insulin (B) Increased in diabetes mellitus (C) Increased by glucagons (D) Increased in starvation

Last Answer : Answer : A

Description : The transketolase enzyme in the pentose phosphate pathway requires the B vitamin. (A) Pantothenic acid (B) Thiamin (C) Riboflavin (D) Nicotinic acid

Last Answer : Answer : B

Description : When acetate is the sole source of carbon for some microorganisms, the cycle  which is used, is called A.pentose phosphate pathway B.glycolyic pathway C.glyoxylate pathway D.oxaloacetate pathway

Last Answer : C.glyoxylate pathway

Description : In ureotelic animals, urea is formed by (a) Krebs’ cycle (b) EM pathway (c) Ornithine cycle (d) Cori cycle.

Last Answer : (c) Ornithine cycle

Description : Hemolytic anemia is caused by the deficiency of certain enzymes of the pentose phosphate pathway, the principal enzyme involved is (A) Glucose-6-phosphate dehydrogenase (B) Aldolase (C) Fructose 1, 6-bisphosphatase (D) Phosphohexose isomerase

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Description : The pentose phosphate pathway protects erythrocytes against hemolysis by assisting the enzyme: (A) Superoxide dismutase (B) Catalase (C) Glutathionic peroxidase (D) Cytochrome oxidase ENZYMES 149

Last Answer : Answer : C

Description : Pentose phosphate pathway is of significance because it generates (A) NADPH for reductive synthesis (B) Regenerates glucose 6-phosphate (C) Generates fructose 6-phosphate (D) Forms glyceraldehyde 3-phosphate

Last Answer : Answer : A

Description : In pentose phosphate pathway, D-ribulose5-phosphate is converted to D-ribose-5- phosphate by the enzyme: (A) Fumarase (B) Ketoisomerase (C) G-6-PD (D) Epimerase

Last Answer : Answer : B

Description : The enzymes of the pentose phosphate pathway are found in the (A) Cytosol (B) Mitochondria (C) Nucleus (D) Endoplasmic reticulum

Last Answer : Answer : A

Description : The hydrogen acceptor used in pentose phosphate pathway is (A) NAD (B) NADP (C) FAD (D) FMN

Last Answer : Answer : B

Description : Which one of the following statements is incorrect? (A) Insulin increases glucose phosphorylation (B) Insulin increases glycolysis (C) Insulin augments HMP shunt (D) Insulin promotes gluconeogenesis

Last Answer : Answer : D

Description : Excessive secretion of glucocorticoids raises blood glucose by (A) Decreasing glycogenesis (B) Increasing glycogenolysis (C) Increasing gluconeogenesis (D) Inhibiting HMP shunt

Last Answer : Answer : C

Description : The regulatory enzyme in HMP shunt is (A) Glucose-6-phosphate dehydrogenase (B) 6-Phosphogluconate dehydrogenase (C) Both (A) and (B) (D) None of these

Last Answer : Answer : C

Description : The decarboxylation reaction in HMP shunt is catalysed by (A) Gluconolactone hydrolase (B) 6-Phosphogluconate dehydrogenase (C) 6-Phosphogluconate decarboxylase (D) Transaldolase

Last Answer : Answer : C

Description : HMP shunt is present in (A) Erythrocytes (B) Liver (C) Testes (D) All of these

Last Answer : Answer : D

Description : Which of the following enzyme is not involved in HMP shunt? (A) Glyceraldehyde-3-p dehydrogenase (B) Glucose-6-p-dehydrogenase (C) Transketolase (D) Phosphogluconate dehydrogenase

Last Answer : A

Description : Dehydrogenases involved in HMP shunt are specific for (A) NADP+ (B) NAD+ (C) FAD (D) FMN

Last Answer : A

Description : One molecule of glucose gives ______ molecules of CO2 in one round of HMP shunt. (A) 6 (B) 1 (C) 2 (D) 3

Last Answer : B

Description : The heptose ketose sugar formed as a result of chemical reaction in HMP shunt: (A) Sedoheptulose (B) Galactoheptose (C) Glucoheptose (D) Mannoheptose

Last Answer : A

Description : Mature erythrocytes do not contain (A) Glycolytic enzymes(B) HMP shunt enzymes (C) Pyridine nucleotide(D) ATP

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Description : Two examples of substrate level phosphorylation in EM pathway of glucose metabolism are in the reactions of (A) 1,3 bisphosphoglycerate and phosphoenol pyruvate (B) Glucose-6 phosphate ... phosphate (C) 3 phosphoglyceraldehyde and phosphoenolpyruvate (D) 1,3 diphosphoglycerate and 2-phosphoglycerate

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Description : In EM pathway -2-phosphoglycerate is converted to (A) Phospho enol pyruvate (B) Enol pyruvate (C) Di hydroxy acetone phosphate (DHAP) (D) 1,3 bisphosphoglycerate

Last Answer : A

Description : Out of 24 mols of ATP formed in TCA cycle, 2 molecules of ATP can be formed at “substrate level” by which of the following reaction ? (A) Citric acid→ Isocitric acid (B) Isocitrate→ Oxaloacetate (C) Succinic acid→ Fumarate (D) Succinylcat→ Succinic acid

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Description : Before pyruvic acid enters the TCA cycle it must be converted to (A) Acetyl CoA (B) Lactate (C) α-ketoglutarate (D) Citrate

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Description : In glycolysis, ATP is created by A.photophosphorylation B.the chemiosmotic mechanism C.substrate level phosphorylation D.the pentose phosphate pathway

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Description : cAMP is so called because it is formed during (A) TCA cycle (B) Urea cycle (C) Rhodopsin cycle (D) It has a cyclic structure

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Description : All of the following compounds are intermediates of TCA cycle except (A) Maleate (B) Pyruvate (C) Oxaloacetate (D) Fumarate

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Description : In TCA cycle, oxalosuccinate is converted to α-ketoglutarate by the enzyme: (A) Fumarase (B) Isocitrate dehydrogenase (C) Aconitase (D) Succinase

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Description : The integrator between the TCA cycle and urea cycle is (A) Fumarate (B) Malate (C) Pyruvate (D) Citrate

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Description : Substrate level phosphorylation in TCA cycle is in step: (A) Isocitrate dehydrogenase (B) Malate dehydrogenase (C) Aconitase (D) Succinate thiokinase

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Description : The number of molecules of ATP produced by the total oxidation of acetyl CoA in TCA cycle is (A) 6 (B) 8 (C) 10 (D) 12

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Description : The following enzyme is required for the hexose monophosphate shunt pathway: (A) Glucose-6-phosphatase (B) Phosphorylase (C) Aldolase (D) Glucose-6-phosphate dehydrogenase

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Description : Which is the key enzyme of hexose monophosphate shunt pathway?

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Description : TCA cycle starts with the condensation of acetyl group with (A) _____ (B)_____ to yield citric acid.

Last Answer : TCA cycle starts with the condensation of acetyl group with (A) _____ (B)_____ to yield citric acid.