In glycogenolysis, the enzyme which transfers a trisaccharide unit from one branch to the other exposing 1→ 6 branch point is (A) Phosphorylase (B) α-[1→ 4]→ α-[1→ 4]→ Glucan transferase (C) Amylo [1→ 6] glucosidase (D) Amylo[1→ 4]→ [1→ 6] transglucosidase

In glycogenolysis, the enzyme which transfers a trisaccharide unit from one branch to the other exposing 1→ 6 branch point is (A) Phosphorylase (B) α-[1→ 4]→ α-[1→ 4]→ Glucan transferase (C) Amylo [1→ 6] glucosidase (D) Amylo[1→ 4]→ [1→ 6] transglucosidase
by

1 Answer

Answer :

Answer :  B
by
selected

Related questions

In glycogenesis a branch point in the molecule is established by the enzyme (A) Amylo[1→ 4][1→ 6] transglucosidase (B) α [1→ 4] α [1→ 4] Glucan transferase (C) Amylo [1→ 6] glucosidase (D) Glycogen synthase

Description : In glycogenesis a branch point in the molecule is established by the enzyme (A) Amylo[1→ 4][1→ 6] transglucosidase (B) α [1→ 4] α [1→ 4] Glucan transferase (C) Amylo [1→ 6] glucosidase (D) Glycogen synthase

Last Answer : Answer : A

Von Gierke’s disease is characterized by the deficiency of (A) Glucose-6-phosphatase (B) α -1→ 4 Glucosidase (C) 1→ 6 Glucosidase (D) Liver phosphorylase

Description : Von Gierke’s disease is characterized by the deficiency of (A) Glucose-6-phosphatase (B) α -1→ 4 Glucosidase (C) 1→ 6 Glucosidase (D) Liver phosphorylase

Last Answer : Answer : A

Amylo 1, 6 glucosidase is called (A) Branching enzyme (B) debranching enzyme (C) Glucantransferase (D) Phosphorylase

Description : Amylo 1, 6 glucosidase is called (A) Branching enzyme (B) debranching enzyme (C) Glucantransferase (D) Phosphorylase

Last Answer : B

Glycogen is converted to glucose-1- phosphate by (A) UDPG transferase (B) Branching enzyme (C) Phosphorylase (D) Phosphatase

Description : Glycogen is converted to glucose-1- phosphate by (A) UDPG transferase (B) Branching enzyme (C) Phosphorylase (D) Phosphatase

Last Answer : C

The enzyme deficient in Sandhoff’s disease is (A) α-Fucosidase (B) Hexosaminidase A and B (C) β-Galactosidase (D) β-Glucosidase

Description : The enzyme deficient in Sandhoff’s disease is (A) α-Fucosidase (B) Hexosaminidase A and B (C) β-Galactosidase (D) β-Glucosidase

Last Answer : Answer : B

Gaucher’s disease is due to the deficiency of the enzyme: (A) α-Fucosidase (B) β-Galactosidase (C) β-Glucosidase (D) Sphingomyelinase

Description : Gaucher’s disease is due to the deficiency of the enzyme: (A) α-Fucosidase (B) β-Galactosidase (C) β-Glucosidase (D) Sphingomyelinase

Last Answer : Answer : C

The enzyme deficient in Fabry’s disease is (A) α-Galactosidase (B) β-Galactosidase (C) α-Glucosidase (D) β-Glucosidase

Description : The enzyme deficient in Fabry’s disease is (A) α-Galactosidase (B) β-Galactosidase (C) α-Glucosidase (D) β-Glucosidase

Last Answer : Answer : A

Pompe ’s d isease is caused due to deficiency of (A) Lysosomal α-1→4 and 1→6-glucosidase (B) Glucose-6-phosphatase (C) Glycogen synthase (D) Phosphofructokinase

Description : Pompe ’s d isease is caused due to deficiency of (A) Lysosomal α-1→4 and 1→6-glucosidase (B) Glucose-6-phosphatase (C) Glycogen synthase (D) Phosphofructokinase

Last Answer : Answer : A

Defective enzyme in Hurler’s syndrome is (A) α-L-diuronidase (B) Iduronate sulphatase (C) Arylsulphatase B (D) C-acetyl transferase

Description : Defective enzyme in Hurler’s syndrome is (A) α-L-diuronidase (B) Iduronate sulphatase (C) Arylsulphatase B (D) C-acetyl transferase

Last Answer : Answer : A

Defective enzyme in Hunter’s syndrome is (A) α-L-iduronidase (B) Iduronate sulphatase (C) Arylsulphatase B (D) C-acetyl transferase

Description : Defective enzyme in Hunter’s syndrome is (A) α-L-iduronidase (B) Iduronate sulphatase (C) Arylsulphatase B (D) C-acetyl transferase

Last Answer : Answer : B

An inborn error, maple syrup urine disease is due to deficiency of the enzyme: (A) Isovaleryl-CoAhydrogenase (B) Phenylalnine hydroxylase (C) Adenosyl transferase (D) α-Ketoacid decarboxylase

Description : An inborn error, maple syrup urine disease is due to deficiency of the enzyme: (A) Isovaleryl-CoAhydrogenase (B) Phenylalnine hydroxylase (C) Adenosyl transferase (D) α-Ketoacid decarboxylase

Last Answer : Answer : D

Insulin regulates fatty acid synthesis by (A) Dephosphorylating of acetyl CoA carboxylase (B) Activating phosphorylase (C) Inhibiting malonyl CoA formation (D) Controlling carnitine-Acyl CoA transferase activity

Description : Insulin regulates fatty acid synthesis by (A) Dephosphorylating of acetyl CoA carboxylase (B) Activating phosphorylase (C) Inhibiting malonyl CoA formation (D) Controlling carnitine-Acyl CoA transferase activity

Last Answer : Answer : A

Which one of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product? (a) Small intestine : Proteins Pepsin  →  Amino acids (b) Stomach : Fats Lipase  →  Micelles (c) Duodenum : Triglycerides Trypsin  →  Monoglycerides (d) Small intestine : Starch α-Amylase  →  Disaccharide (maltose)

Description : Which one of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product? (a) Small intestine : Proteins Pepsin  →  ... Trypsin  →  Monoglycerides (d) Small intestine : Starch α-Amylase  →  Disaccharide (maltose)

Last Answer : (d) Small intestine : Starch α-Amylase  →  Disaccharide

The enzyme that converts glucose to glucose-6-phosphate is (A) Phosphatase (B) Hexokinase (C) Phosphorylase (D) Glucose synthetase

Description : The enzyme that converts glucose to glucose-6-phosphate is (A) Phosphatase (B) Hexokinase (C) Phosphorylase (D) Glucose synthetase

Last Answer : Answer : B

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

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

Last Answer : D

he following antidiabetic drug inhibits intestinal brush border α-glucosidase enzymes: A. Acarbose B. Pioglitazone C. Metformin D. Guargum

Description : he following antidiabetic drug inhibits intestinal brush border α-glucosidase enzymes: A. Acarbose B. Pioglitazone C. Metformin D. Guargum

Last Answer : A. Acarbose

The α-amino group of the new amino acyl tRNA in the A site carries out a nucleophilic attack on the esterified carboxyl group of the peptidyl tRNA occupying the P site. This reaction is catalysed by (A) DNA polymerase (B) RNA polymerase (C) Peptidyl transferase (D) DNA ligase

Description : The α-amino group of the new amino acyl tRNA in the A site carries out a nucleophilic attack on the esterified carboxyl group of the peptidyl tRNA occupying the P site. This reaction is catalysed by (A) DNA polymerase (B) RNA polymerase (C) Peptidyl transferase (D) DNA ligase

Last Answer : Answer : C

The enzyme common to catabolism of all the purines is (A) Adenosine deaminase (B) Purine nucleoside phosphorylase (C) Guanase (D) None of these

Description : The enzyme common to catabolism of all the purines is (A) Adenosine deaminase (B) Purine nucleoside phosphorylase (C) Guanase (D) None of these

Last Answer : Answer : B

Tarui disease is characterized by the deficiency of the enzyme: (A) Liver phosphorylase (B) Muscle phosphorylase (C) Muscle and erythrocyte phosphofructokinase (D) Lysosomal acid maltase

Description : Tarui disease is characterized by the deficiency of the enzyme: (A) Liver phosphorylase (B) Muscle phosphorylase (C) Muscle and erythrocyte phosphofructokinase (D) Lysosomal acid maltase

Last Answer : Answer : C

Her’s disease is characterized by deficiency of (A) Muscle phosphorylase (B) Liver phosphorylase (C) Debranching enzyme (D) Glycogen synthase

Description : Her’s disease is characterized by deficiency of (A) Muscle phosphorylase (B) Liver phosphorylase (C) Debranching enzyme (D) Glycogen synthase

Last Answer : Answer : B

Mc Ardle’s syndrome is characterized by the absence of (A) Liver phosphorylase (B) Muscle phosphorylase (C) Branching enzyme (D) Debranching enzyme

Description : Mc Ardle’s syndrome is characterized by the absence of (A) Liver phosphorylase (B) Muscle phosphorylase (C) Branching enzyme (D) Debranching enzyme

Last Answer : Answer : B

Cori disease (Limit dextrinosis) is caused due to absence of (A) Branching enzyme (B) Debranching enzyme (C) Glycogen synthase (D) Phosphorylase

Description : Cori disease (Limit dextrinosis) is caused due to absence of (A) Branching enzyme (B) Debranching enzyme (C) Glycogen synthase (D) Phosphorylase

Last Answer : Answer : B

What is the main enzyme for glycogenolysis?

Description : What is the main enzyme for glycogenolysis?

Last Answer : Glycogen phosphorylase.

A person’s lysosomes lack the enzyme β-glucosidase ?

Description : There is an inherited disease in which a person’s lysosomes lack the enzyme β-glucosidase What are the clinical and biochemical consequences of this deficiency?

Last Answer : The disease is called Gaucher disease, and it is the most common of the sphingolipidoses; its incidence in the general population is ∼1:2500. This class of disease results from defective hydrolysis of ... may show signs of mental deterioration if much of the lipid accumulates in the brain as well. 

Adrenaline raises blood glucose level by the following actions except: A. Inducing hepatic glycogenolysis B. Inhibiting insulin secretion from pancreatic β cells C. Augmenting glucagon secretion from pancreatic α cells D. Inhibiting peripheral glucose utilization

Description : Adrenaline raises blood glucose level by the following actions except: A. Inducing hepatic glycogenolysis B. Inhibiting insulin secretion from pancreatic β cells C. Augmenting glucagon secretion from pancreatic α cells D. Inhibiting peripheral glucose utilization

Last Answer : D. Inhibiting peripheral glucose utilization

Adrenaline raises blood glucose level by the following actions except: A. Inducing hepatic glycogenolysis B. Inhibiting insulin secretion from pancreatic β cells C. Augmenting glucagon secretion from pancreatic α cells D. Inhibiting peripheral glucose utilization

Description : Adrenaline raises blood glucose level by the following actions except: A. Inducing hepatic glycogenolysis B. Inhibiting insulin secretion from pancreatic β cells C. Augmenting glucagon secretion from pancreatic α cells D. Inhibiting peripheral glucose utilization

Last Answer : D. Inhibiting peripheral glucose utilization

The enzyme required for salvage of free purine bases is (A) Adenine phosphoribosyl transferase (B) Hypoxanthine guanine phosphoribosyl transferase (C) Both (A) and (B) (D) None of these

Description : The enzyme required for salvage of free purine bases is (A) Adenine phosphoribosyl transferase (B) Hypoxanthine guanine phosphoribosyl transferase (C) Both (A) and (B) (D) None of these

Last Answer : Answer : C

Orotic aciduria type II reflects the deficiency of the enzyme: (A) Orotate phosphoribosyl transferase (B) Orotidylate decarboxylase (C) Dihydroorotase (D) Dihydroorotate dehydrogenase

Description : Orotic aciduria type II reflects the deficiency of the enzyme: (A) Orotate phosphoribosyl transferase (B) Orotidylate decarboxylase (C) Dihydroorotase (D) Dihydroorotate dehydrogenase

Last Answer : Answer : B

Lesch-Nyhan syndrome, the sex linked recessive disorder is due to the lack of the enzyme: (A) Hypoxanthine-guanine phosphoribosyl transferse (B) Xanthine oxidase (C) Adenine phosphoribosyl transferase (D) Adenosine deaminase

Description : Lesch-Nyhan syndrome, the sex linked recessive disorder is due to the lack of the enzyme: (A) Hypoxanthine-guanine phosphoribosyl transferse (B) Xanthine oxidase (C) Adenine phosphoribosyl transferase (D) Adenosine deaminase

Last Answer : Answer : A

Methotrexate blocks the synthesis of thymidine monophosphate by inhibiting the activity of the enzyme: (A) Dihydrofolate reductase (B) Orotate phosphoribosyl transferase (C) Ribonucleotide reductase (D) Dihydroorotase

Description : Methotrexate blocks the synthesis of thymidine monophosphate by inhibiting the activity of the enzyme: (A) Dihydrofolate reductase (B) Orotate phosphoribosyl transferase (C) Ribonucleotide reductase (D) Dihydroorotase

Last Answer : Answer : A

An enzyme which acts as allosteric regulator and sensitive to both phosphate concentration and to the purine nucleotides is (A) PRPP synthetase (B) PRPP glutamyl midotransferase (C) HGPR Tase (D) Formyl transferase

Description : An enzyme which acts as allosteric regulator and sensitive to both phosphate concentration and to the purine nucleotides is (A) PRPP synthetase (B) PRPP glutamyl midotransferase (C) HGPR Tase (D) Formyl transferase

Last Answer : Answer : A

In the synthetic pathway of epinephrine, disulfiram (antabuse) inhibits the enzyme: (A) Tyrosine hydroxylase (B) Dopamine β-hydroxylase (C) DOPA decarboxylase (D) N-methyl transferase

Description : In the synthetic pathway of epinephrine, disulfiram (antabuse) inhibits the enzyme: (A) Tyrosine hydroxylase (B) Dopamine β-hydroxylase (C) DOPA decarboxylase (D) N-methyl transferase

Last Answer : Answer : B

A deficiency of copper effects the formation of normal collagen by reducing the activity of which of the following enzyme? (A) Prolyl hydroxylase (B) Lysyl oxidase (C) Lysyl hydroxylase (D) Glucosyl transferase

Description : A deficiency of copper effects the formation of normal collagen by reducing the activity of which of the following enzyme? (A) Prolyl hydroxylase (B) Lysyl oxidase (C) Lysyl hydroxylase (D) Glucosyl transferase

Last Answer : Answer : B

The enzyme regulating extramitochondrial fatty acid synthesis is (A) Thioesterase (B) Acetyl CoA carboxylase (C) Acyl transferase (D) Multi-enzyme complex

Description : The enzyme regulating extramitochondrial fatty acid synthesis is (A) Thioesterase (B) Acetyl CoA carboxylase (C) Acyl transferase (D) Multi-enzyme complex

Last Answer : Answer : B

The enzyme hexokinase is a (A) Hydrolase (B) Oxidoreductase (C) Transferase (D) Ligase

Description : The enzyme hexokinase is a (A) Hydrolase (B) Oxidoreductase (C) Transferase (D) Ligase

Last Answer : Answer : C

In the biosynthesis of cholesterol, the rate limiting enzyme is (A) Mevalonate kinase (B) HMG-CoA synthetase (C) HMG-CoA reductase (D) Cis-prenyl transferase

Description : In the biosynthesis of cholesterol, the rate limiting enzyme is (A) Mevalonate kinase (B) HMG-CoA synthetase (C) HMG-CoA reductase (D) Cis-prenyl transferase

Last Answer : Answer : C

Synthesis of phosphatidylinositol by transfer of inositol to CDP diacylglycerol is catalysed by the enzyme: (A) CTP phosphatidate cytidyl transferase (B) Phosphatidate phosphohydrolase (C) CDP-diacylglycerol inositol transferase (D) Choline kinase

Description : Synthesis of phosphatidylinositol by transfer of inositol to CDP diacylglycerol is catalysed by the enzyme: (A) CTP phosphatidate cytidyl transferase (B) Phosphatidate phosphohydrolase (C) CDP-diacylglycerol inositol transferase (D) Choline kinase

Last Answer : Answer : C

Synthesis of polyunsaturated fatty acids involves the enzyme systems: (A) Acyl transferase and hydratase (B) Desaturase and elongase (C) Ketoacyl-CoA reductase and hydratase (D) Dihydroxyacetone phosphate

Description : Synthesis of polyunsaturated fatty acids involves the enzyme systems: (A) Acyl transferase and hydratase (B) Desaturase and elongase (C) Ketoacyl-CoA reductase and hydratase (D) Dihydroxyacetone phosphate

Last Answer : Answer : A

Galactose 1-phosphate is converted to uridine diphosphate galactose, the reaction is catalysed by the enzyme: (A) Glactokinase (B) Galactose 1-phosphate uridyl transferase (C) Uridine diphospho galactose 4-epimerase (D) UDP glucose pyrophosphorylase

Description : Galactose 1-phosphate is converted to uridine diphosphate galactose, the reaction is catalysed by the enzyme: (A) Glactokinase (B) Galactose 1-phosphate uridyl transferase (C) Uridine diphospho galactose 4-epimerase (D) UDP glucose pyrophosphorylase

Last Answer : Answer : B

Starch (a) is a trisaccharide. (b) is also called amylose. (c) is also called amylopectin. (d) is a mixture of amylose + amylopectin

Description : Starch (a) is a trisaccharide. (b) is also called amylose. (c) is also called amylopectin. (d) is a mixture of amylose + amylopectin

Last Answer : is a mixture of amylose + amylopectin

The hexose monophosphate pathway includes the enzyme: (A) Maltase dehydrogenase (B) Hexokinase (C) α-Ketoglutarate dehydrogenase (D) Glucose-6-phosphate dehydrogenase

Description : The hexose monophosphate pathway includes the enzyme: (A) Maltase dehydrogenase (B) Hexokinase (C) α-Ketoglutarate dehydrogenase (D) Glucose-6-phosphate dehydrogenase

Last Answer : Answer : D

Gaucher's Disease is associated with the deficiency of : 1) Hexosaminidase A 2) Sphingomyelinase 3) Arylsulphatase-A 4) B- Glucosidase 5) Iduronidase

Description : Gaucher's Disease is associated with the deficiency of : 1) Hexosaminidase A 2) Sphingomyelinase 3) Arylsulphatase-A 4) B- Glucosidase 5) Iduronidase

Last Answer : Answers-4 Hexosaminidase A deficiency is associated Tay-Sachs disease. Sphingomyelinase deficiency is associated with Niemann-Pick disease. Arylsulphatase-A deficiency is associated with metachromic leucodystrophy.Iduronidase deficiency is associated with Hurlers syndrome.

The MOST frequently synthesized substance by Streptococcus mutans is: A. Liven B. Fructose C. Glucan D. Glycogen

Description : The MOST frequently synthesized substance by Streptococcus mutans is: A. Liven B. Fructose C. Glucan D. Glycogen

Last Answer : C. Glucan

ADH or vasopressin is (a) enzyme that hydrolyses peptides (b) hormone secreted by pituitary that promotes reabsorption of water from glomerular filtrate (c) hormone that promotes glycogenolysis (d) energy rich compound connected with muscle contraction.

Description : ADH or vasopressin is (a) enzyme that hydrolyses peptides (b) hormone secreted by pituitary that promotes reabsorption of water from glomerular filtrate (c) hormone that promotes glycogenolysis (d) energy rich compound connected with muscle contraction.

Last Answer : (b) hormone secreted by pituitary that promotes reabsorption of water from glomerular filtrate

Insulin increases the activity of (A) Pyruvate kinase (B) Phosphorylase (C) Triacylglycerol kinase (D) Fructose 2, 6-bisphosphatase

Description : Insulin increases the activity of (A) Pyruvate kinase (B) Phosphorylase (C) Triacylglycerol kinase (D) Fructose 2, 6-bisphosphatase

Last Answer : Answer : A

Glycogen phosphorylase liberates the following from glycogen (A) Glucose (B) Glucose-6-phosphate (C) Glucose-1-phosphate (D) Maltose

Description : Glycogen phosphorylase liberates the following from glycogen (A) Glucose (B) Glucose-6-phosphate (C) Glucose-1-phosphate (D) Maltose

Last Answer : Answer : C

Glycogen while being acted upon by active phosphorylase is converted first to (A) Glucose (B) Glucose 1-phosphate and Glycogen with 1 carbon less (C) Glucose-6-phosphate and Glycogen with 1 carbon less (D) 6-Phosphogluconic acid

Description : Glycogen while being acted upon by active phosphorylase is converted first to (A) Glucose (B) Glucose 1-phosphate and Glycogen with 1 carbon less (C) Glucose-6-phosphate and Glycogen with 1 carbon less (D) 6-Phosphogluconic acid

Last Answer : C

McArdle’s disease is due to the deficiency of (A) Glucose-6-phosphatase (B) Phosphofructokinase (C) Liver phosphorylase (D) muscle phosphorylase

Description : McArdle’s disease is due to the deficiency of (A) Glucose-6-phosphatase (B) Phosphofructokinase (C) Liver phosphorylase (D) muscle phosphorylase

Last Answer : D

Erythromycin binds to 50 S ribosomal sub unit and (A) Inhibits binding of amino acyl tRNA (B) Inhibits Peptidyl transferase activity (C) Inhibits translocation (D) Causes premature chain termination

Description : Erythromycin binds to 50 S ribosomal sub unit and (A) Inhibits binding of amino acyl tRNA (B) Inhibits Peptidyl transferase activity (C) Inhibits translocation (D) Causes premature chain termination

Last Answer : Answer : C

Mammals other than higher primates do not suffer from gout because they (A) Lack xanthine oxidase (B) Lack adenosine deaminase (C) Lack purine nucleoside phosphorylase (D) Possess uricase

Description : Mammals other than higher primates do not suffer from gout because they (A) Lack xanthine oxidase (B) Lack adenosine deaminase (C) Lack purine nucleoside phosphorylase (D) Possess uricase

Last Answer : Answer : D