Glycogen synthetase catalyses the formation of (A) α−1, 4-Glycosidic bonds (B) α−1, 6-Glycosidic bonds (C) Both (A) and (B) (D) None of these

Glycogen synthetase catalyses the formation of (A) α−1, 4-Glycosidic bonds (B) α−1, 6-Glycosidic bonds (C) Both (A) and (B) (D) None of these
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Pyridoxal phosphate is a coenzyme for (A) Glycogen synthetase (B) Phosphorylase (C) Both (A) and (B) (D) None of these

Description : Pyridoxal phosphate is a coenzyme for (A) Glycogen synthetase (B) Phosphorylase (C) Both (A) and (B) (D) None of these

Last Answer : Answer : B

Insulin decreases the synthesis of (A) Hexokinase (B) Glucokinase (C) PEP carboxykinase (D) Glycogen synthetase

Description : Insulin decreases the synthesis of (A) Hexokinase (B) Glucokinase (C) PEP carboxykinase (D) Glycogen synthetase

Last Answer : Answer : C

Insulin has no effect on the activity of the enzyme: (A) Glycogen synthetase (B) Fructokinase (C) Pyruvate kinase (D) Pyruvate dehydrogenase

Description : Insulin has no effect on the activity of the enzyme: (A) Glycogen synthetase (B) Fructokinase (C) Pyruvate kinase (D) Pyruvate dehydrogenase

Last Answer : Answer : B

Glycogen synthetase activity is depressed by (A) Glucose (B) Insulin (C) Cyclic AMP (D) Fructokinase

Description : Glycogen synthetase activity is depressed by (A) Glucose (B) Insulin (C) Cyclic AMP (D) Fructokinase

Last Answer : C

Uridine diphosphate glucose (UDPG) is (A) Required for metabolism of galactose (B) Required for synthesis of glucuronic acid (C) A substrate for glycogen synthetase (D) All of the above

Description : Uridine diphosphate glucose (UDPG) is (A) Required for metabolism of galactose (B) Required for synthesis of glucuronic acid (C) A substrate for glycogen synthetase (D) All of the above

Last Answer : D

Pyridoxal phosphate is a coenzyme for (A) Glycogen synthetase (B) Phosphorylase (C) Both (A) and (B) (D) None of these

Description : Pyridoxal phosphate is a coenzyme for (A) Glycogen synthetase (B) Phosphorylase (C) Both (A) and (B) (D) None of these

Last Answer : (B) Phosphorylase

The double helical structure of DNA is held together by (a) sulfur-sulfur linkages (b) peptide bonding (c) hydrogen bonding (d) glycosidic bonds

Description : The double helical structure of DNA is held together by (a) sulfur-sulfur linkages (b) peptide bonding (c) hydrogen bonding (d) glycosidic bonds

Last Answer : hydrogen bonding

Anhydro bonds of protein are called (a) Glycosidic (b) Peptide (c) Easter (d) Diester.

Description : Anhydro bonds of protein are called (a) Glycosidic (b) Peptide (c) Easter (d) Diester.

Last Answer : (b) Peptide

Formation of acetyl CoA from pyruvate for de novo synthesis of fatty acids requires (A) Pyruvate dehydrogenase complex (B) Citrate synthetase (C) ATP citrate lyase (D) All of these

Description : Formation of acetyl CoA from pyruvate for de novo synthesis of fatty acids requires (A) Pyruvate dehydrogenase complex (B) Citrate synthetase (C) ATP citrate lyase (D) All of these

Last Answer : Answer : D

The formation of ∆2-trans-enoyl-CoA from acyl-CoA requires the enzyme: (A) Acyl-CoA synthetase (B) Acyl-CoA dehydrogenase (C) 3-Hydroxy acyl-CoA dehydrogenase (D) Thiolase

Description : The formation of ∆2-trans-enoyl-CoA from acyl-CoA requires the enzyme: (A) Acyl-CoA synthetase (B) Acyl-CoA dehydrogenase (C) 3-Hydroxy acyl-CoA dehydrogenase (D) Thiolase

Last Answer : Answer : B

The ‘Committed step’ in the biosynthesis of cholesterol from acetyl CoA is (A) Formation of acetoacetyl CoA from acetyl CoA (B) Formation of mevalonate from HMG CoA (C) Formation of HMG CoA from acetyl CoA and acetoacetyl CoA (D) Formation of squalene by squalene synthetase

Description : The ‘Committed step’ in the biosynthesis of cholesterol from acetyl CoA is (A) Formation of acetoacetyl CoA from acetyl CoA (B) Formation of mevalonate from HMG CoA (C) Formation of HMG CoA from acetyl CoA and acetoacetyl CoA (D) Formation of squalene by squalene synthetase

Last Answer : Answer : B

The fatty acid synthase complex catalyses (A) 4 sequential enzymatic steps (B) 6 sequential enzymatic steps (C) 7 sequential enzymatic steps (D) 8 sequential enzymatic steps

Description : The fatty acid synthase complex catalyses (A) 4 sequential enzymatic steps (B) 6 sequential enzymatic steps (C) 7 sequential enzymatic steps (D) 8 sequential enzymatic steps

Last Answer : Answer : B

The enzyme glucose-6-phosphatase which catalyses the conversion of glucose 6-phosphate to glucose is not found in (A) Liver (B) Muscle (C) Intestine (D) Kidney

Description : The enzyme glucose-6-phosphatase which catalyses the conversion of glucose 6-phosphate to glucose is not found in (A) Liver (B) Muscle (C) Intestine (D) Kidney

Last Answer : Answer : B

Which one of the following statements concerning glucose metabolism is correct? (A) The conversion of Glucose to lactate occurs only in the R.B.C (B) Glucose enters most cells by a mechanism in which Na+ and glucose are co-transported (C) Pyruvate kinase catalyses an irreversible reaction (D) An elevated level of insulin leads to a decreased level of fructose 2, 6-bisphosphate in hepatocyte

Description : Which one of the following statements concerning glucose metabolism is correct? (A) The conversion of Glucose to lactate occurs only in the R.B.C (B) Glucose enters most cells by a mechanism in ... ) An elevated level of insulin leads to a decreased level of fructose 2, 6-bisphosphate in hepatocyte

Last Answer : C

DNA topoisomerase I of E. coli catalyses (A) Relaxation of negatively supercoiled DNA (B) Relaxation of positively supercoiled DNA (C) Conversion of negatively supercoiled DNA into positively supercoiled DNA (D) Conversion of double helix into supercoiled DNA

Description : DNA topoisomerase I of E. coli catalyses (A) Relaxation of negatively supercoiled DNA (B) Relaxation of positively supercoiled DNA (C) Conversion of negatively supercoiled DNA into positively supercoiled DNA (D) Conversion of double helix into supercoiled DNA

Last Answer : Answer : A

Reverse transcriptase catalyses (A) Synthesis of RNA (B) Breakdown of RNA (C) Synthesis of DNA (D) Breakdown of DNA

Description : Reverse transcriptase catalyses (A) Synthesis of RNA (B) Breakdown of RNA (C) Synthesis of DNA (D) Breakdown of DNA

Last Answer : Answer : C

The enzyme phosphoenolpyruvate carboxykinase catalyses the conversion of oxaloacetate to phosphoenolpyruvate requires (A) ATP (B) ADP (C) AMP (D) GTP

Description : The enzyme phosphoenolpyruvate carboxykinase catalyses the conversion of oxaloacetate to phosphoenolpyruvate requires (A) ATP (B) ADP (C) AMP (D) GTP

Last Answer : Answer : D

The enzyme acyl-CoA synthase catalyses the conversion of a fatty acid of an active fatty acid in the presence of (A) AMP (B) ADP (C) ATP (D) GTP

Description : The enzyme acyl-CoA synthase catalyses the conversion of a fatty acid of an active fatty acid in the presence of (A) AMP (B) ADP (C) ATP (D) GTP

Last Answer : Answer : C

The enzyme dopamine β-oxidase which catalyses conversion of dopamine to norepinephrine requires (A) Vitamin A (B) Vitamin C (C) Vitamin E (D) Vitamin B12

Description : The enzyme dopamine β-oxidase which catalyses conversion of dopamine to norepinephrine requires (A) Vitamin A (B) Vitamin C (C) Vitamin E (D) Vitamin B12

Last Answer : Answer : B

Fructokinase catalyses which reaction?

Description : Fructokinase catalyses which reaction?

Last Answer : Fructose to fructose-1-phosphate. 

In nucleotides, phosphate is attached to sugar by (A) Salt bond (B) Hydrogen bond (C) Ester bond (D) Glycosidic bond

Description : In nucleotides, phosphate is attached to sugar by (A) Salt bond (B) Hydrogen bond (C) Ester bond (D) Glycosidic bond

Last Answer : Answer : C

α-Glycosidic bond is present in (A) Lactose (B) Maltose (C) Sucrose (D) All of these

Description : α-Glycosidic bond is present in (A) Lactose (B) Maltose (C) Sucrose (D) All of these

Last Answer : B

A dissaccharide formed by 1,1-glycosidic linkage between their monosaccharide units is (A) Lactose (B) Maltose (C) Trehalose (D) Sucrose

Description : A dissaccharide formed by 1,1-glycosidic linkage between their monosaccharide units is (A) Lactose (B) Maltose (C) Trehalose (D) Sucrose

Last Answer : B

A dissaccharide formed by 1,1-glycosidic linkage between their monosaccharide units is (A) Lactose (B) Maltose (C) Trehalose (D) Sucrose

Description : A dissaccharide formed by 1,1-glycosidic linkage between their monosaccharide units is (A) Lactose (B) Maltose (C) Trehalose (D) Sucrose

Last Answer : C

The monosaccharide units are linked by 1 → 4 glycosidic linkage in (A) Maltose (B) Sucrose (C) Cellulose (D) Cellobiose

Description : The monosaccharide units are linked by 1 → 4 glycosidic linkage in (A) Maltose (B) Sucrose (C) Cellulose (D) Cellobiose

Last Answer : A

What is the glycosidic linkage in sucrose?

Description : What is the glycosidic linkage in sucrose?

Last Answer : 1-2 linkage.

What is the glycosidic linkage in lactose?

Description : What is the glycosidic linkage in lactose?

Last Answer : Beta 1-4 linkage.

Cellulose, the most important constituent of plant cell wall is made up of (a) branched chain of glucose molecules linked by β-1, 4 glycosidic bond in straight chain and α-1, 6 glycosidic bond at the site of branching (b) unbranched chain of glucose molecules linked by β-1, 4 glycosidic bond (c) branched chain of glucose molecules linked by α-1, 6 glycosidic bond at the site of branching (d) unbranched chain of glucose molecules linked by α-1, 4 glycosidic bond.

Description : Cellulose, the most important constituent of plant cell wall is made up of (a) branched chain of glucose molecules linked by β-1, 4 glycosidic bond in straight chain and α-1, 6 glycosidic bond ... the site of branching (d) unbranched chain of glucose molecules linked by α-1, 4 glycosidic bond.

Last Answer : (b) unbranched chain of glucose molecules linked by β-1, 4 glycosidic bond

Which of the following statements best describes the difference between amylose and amylopectin? (a) Amylose is a branched polysaccharide while amylopectin is a chain polysaccharide. (b) Amylose is a straight-chain polysaccharide while amylopectin is a branched polysaccharide. (c) Amylose contains α-1,6-glycosidic linkage which amylopectin does not contain. (d) Amylose is composed of thousands of D-glucose units while amylopectin is composed of thousands of D-galactose units.

Description : Which of the following statements best describes the difference between amylose and amylopectin? (a) Amylose is a branched polysaccharide while amylopectin is a chain polysaccharide. (b) Amylose is a ... of thousands of D-glucose units while amylopectin is composed of thousands of D-galactose units.

Last Answer : Amylose is a straight-chain polysaccharide while amylopectin is a branched polysaccharide

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

De novo synthesis of pyrimidine nucleotides is regulated by (A) Carbamoyl phosphate synthetase (B) Aspartate transcarbamoylase (C) Both (A) and (B) (D) None of these

Description : De novo synthesis of pyrimidine nucleotides is regulated by (A) Carbamoyl phosphate synthetase (B) Aspartate transcarbamoylase (C) Both (A) and (B) (D) None of these

Last Answer : Answer : C

AMP is an allosteric inhibitor of (A) PRPP synthetase (B) Adenylosucciante synthetase (C) Both (A) and (B) (D) None of these

Description : AMP is an allosteric inhibitor of (A) PRPP synthetase (B) Adenylosucciante synthetase (C) Both (A) and (B) (D) None of these

Last Answer : Answer : C

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

The regulatory enzyme for haem synthesis is (A) ALA synthetase (B) haem synthetase (C) Both (A) and (B) (D) None of these

Description : The regulatory enzyme for haem synthesis is (A) ALA synthetase (B) haem synthetase (C) Both (A) and (B) (D) None of these

Last Answer : Answer : A

Both Acyl carrier protein (ACP) of fatty acid synthetase and coenzyme (CoA) are (A) Contain reactive phosphorylated (B) Contain thymidine (C) Contain phosphopantetheine reactive groups (D) Contain cystine reactive groups

Description : Both Acyl carrier protein (ACP) of fatty acid synthetase and coenzyme (CoA) are (A) Contain reactive phosphorylated (B) Contain thymidine (C) Contain phosphopantetheine reactive groups (D) Contain cystine reactive groups

Last Answer : Answer : C

Cytosolic and mitochondrial carbamoyl phosphate synthetase have the following similarity: (A) Both use ammonia as a substance (B) Both provide carbamoyl phosphate for urea synthesis (C) Both require N-acetylglutamate as an activator (D) Both are allosteric enzymes

Description : Cytosolic and mitochondrial carbamoyl phosphate synthetase have the following similarity: (A) Both use ammonia as a substance (B) Both provide carbamoyl phosphate for urea synthesis (C) Both require N-acetylglutamate as an activator (D) Both are allosteric enzymes

Last Answer : Answer : C

The formation of a peptide bond during the elongation step of protein synthesis results in the splitting of how many high energy bonds? (A) 1 (B) 2 (C) 3 (D) 4

Description : The formation of a peptide bond during the elongation step of protein synthesis results in the splitting of how many high energy bonds? (A) 1 (B) 2 (C) 3 (D) 4

Last Answer : Answer : B

$ The process of formation of polysaccharides by condensation of monomers is called hydrolysis. Glycogen is a stored food materials found in plants.

Description : $ The process of formation of polysaccharides by condensation of monomers is called hydrolysis. Glycogen is a stored food materials found in plants.

Last Answer : $ The process of formation of polysaccharides by condensation of monomers is called hydrolysis. Glycogen is a ... D. If both As and R are wrong.

DNA-dependent RNA polymerase catalyses transcription on one strand of the DNA which is called the (a) template strand (b) coding strand (c) alpha strand (d) antistrand

Description : DNA-dependent RNA polymerase catalyses transcription on one strand of the DNA which is called the (a) template strand (b) coding strand (c) alpha strand (d) antistrand

Last Answer : (a) template strand

DNA-dependent RNA polymerase catalyses transcription on one strand of the DNA which is called the (a) template strand (b) coding strand (c) alpha strand (d) antistrand.

Description : DNA-dependent RNA polymerase catalyses transcription on one strand of the DNA which is called the (a) template strand (b) coding strand (c) alpha strand (d) antistrand.

Last Answer : (a) template strand

The enzyme that catalyses carbon dioxide fixation in C4 plants is (a) RuBP carboxylase (b) PEP carboxylase (c) carbonic anhydrase (d) carboxydismutase.

Description : The enzyme that catalyses carbon dioxide fixation in C4 plants is (a) RuBP carboxylase (b) PEP carboxylase (c) carbonic anhydrase (d) carboxydismutase.

Last Answer : (b) PEP carboxylase

Leguminous plants are able to fix atmospheric nitrogen through the process of symbiotic nitrogen fixation. Which one of the following statements is not correct during this process of nitrogen fixation? (a) Leghaemoglobin scavenges oxygen and is pinkish in colour. (b) Nodules act as sites for nitrogen fixation. (c) The enzyme nitrogenase catalyses the conversion of atmospheric N2 to NH3. (d) Nitrogenase is insensitive to oxygen.

Description : Leguminous plants are able to fix atmospheric nitrogen through the process of symbiotic nitrogen fixation. Which one of the following statements is not correct during this process of nitrogen fixation ... the conversion of atmospheric N2 to NH3. (d) Nitrogenase is insensitive to oxygen.

Last Answer : (d) Nitrogenase is insensitive to oxygen.

Isozymes or iso enzymes are those enzyme which A- have same structural forms B- have different structural forms but identical catalytic properties C- catalyses oxidation reactionsD- none of these

Description : Isozymes or iso enzymes are those enzyme which A- have same structural forms B- have different structural forms but identical catalytic properties C- catalyses oxidation reactions D- none of these

Last Answer : have different structural forms but identical catalytic properties

Isozymes or iso enzymes are those enzyme which A- have same structural forms B- have different structural forms but identical catalytic properties C- catalyses oxidation reactions D- none of these

Description : Isozymes or iso enzymes are those enzyme which A- have same structural forms B- have different structural forms but identical catalytic properties C- catalyses oxidation reactions D- none of these

Last Answer : have different structural forms but identical catalytic properties

Define glycosidic bond.

Description : Define glycosidic bond.

Last Answer : A glycosidic bond is a type of covalent bond that forms between a sugar molecule and another molecule, such as another sugar or a non-sugar compound. It is a specific type ... configurations can lead to variations in the structure, solubility, digestibility, and biological activity of carbohydrates.

What is glycosidic bond? -Biology

Description : What is glycosidic bond? -Biology

Last Answer : answer:

Identify the substances having glycosidic bond and peptide bond, respectively in their structure. (a) Chitin, cholesterol (b) Glycerol, trypsin (c) Cellulose, lecithin (d) Inulin, insulin

Description : Identify the substances having glycosidic bond and peptide bond, respectively in their structure. (a) Chitin, cholesterol (b) Glycerol, trypsin (c) Cellulose, lecithin (d) Inulin, insulin

Last Answer : (d) Inulin, insulin

In a nucleotide, the nitrogen base is joined to the sugar molecule by a) Phosphodiester bond b) Glycosidic bond c) Hydrogen bond d) (a) &(b)

Description : In a nucleotide, the nitrogen base is joined to the sugar molecule by a) Phosphodiester bond b) Glycosidic bond c) Hydrogen bond d) (a) &(b)

Last Answer : b) Glycosidic bond

Define Glycosides. Classify it on the basis of Glycosidic linkage with example.

Description : Define Glycosides. Classify it on the basis of Glycosidic linkage with example.

Last Answer : Glycosides are organic compounds of plant and animal origin which yield on either acidic or enzymatic hydrolysis, one or more sugars and non-sugar residue. Classification on the basis of glycosidic ... ribose or deoxyribose and ultimately give N- glycosides form. e.g. Cinchona

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