What is the glycosidic linkage in lactose?

What is the glycosidic linkage in lactose?
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1 Answer

Answer :

Beta 1-4 linkage.
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Related questions

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

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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.

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

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

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

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

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

Description : 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

Last Answer : Answer : A

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

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

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

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

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

Ultraviolet light can damage a DNA strand causing (A) Two adjacent purine residue to form a covalently bounded dimer (B) Two adjacent pyrimidine residues to form covalently bonded dimer (C) Disruption of phosphodiesterase linkage (D) Disruption of non-covalent linkage

Description : Ultraviolet light can damage a DNA strand causing (A) Two adjacent purine residue to form a covalently bounded dimer (B) Two adjacent pyrimidine residues to form covalently bonded dimer (C) Disruption of phosphodiesterase linkage (D) Disruption of non-covalent linkage

Last Answer : Answer : B

The carbon of the pentose in ester linkage with the phosphate in a nucleotide structure is (A) C1 (B) C3 (C) C4 (D) C5

Description : The carbon of the pentose in ester linkage with the phosphate in a nucleotide structure is (A) C1 (B) C3 (C) C4 (D) C5

Last Answer : Answer : D

In biotin-containing enzymes, the biotin is bound to the enzyme by (A) An amide linkage to carboxyl group of glutamine (B) A covalent bond with CO2 (C) An amide linkage to an amino group of lysine (D) An amide linkage to α-carboxyl group of protein

Description : In biotin-containing enzymes, the biotin is bound to the enzyme by (A) An amide linkage to carboxyl group of glutamine (B) A covalent bond with CO2 (C) An amide linkage to an amino group of lysine (D) An amide linkage to α-carboxyl group of protein

Last Answer : Answer : C

Biuret test is specific for (A) Two peptide linkage (B) Phenolic group (C) Imidazole ring (D) None of these

Description : Biuret test is specific for (A) Two peptide linkage (B) Phenolic group (C) Imidazole ring (D) None of these

Last Answer : Answer : A

Expression of structural genes of lac operon is affected by all the following except (A) Lactose or its analogues (B) Repressor tetramer (C) cAMP (D) CAP-cAMP complex

Description : Expression of structural genes of lac operon is affected by all the following except (A) Lactose or its analogues (B) Repressor tetramer (C) cAMP (D) CAP-cAMP complex

Last Answer : Answer : C

Lactose or its analogues act as positive regulators of lac operon by (A) Attaching to i gene and preventing its expression (B) Increasing the synthesis of catabolite gene activator protein (C) Attaching to promoter region and facilitating the binding of RNA polymerase holoenzyme (D) Binding to repressor subunits so that the repressor cannot attach to the operator locus

Description : Lactose or its analogues act as positive regulators of lac operon by (A) Attaching to i gene and preventing its expression (B) Increasing the synthesis of catabolite gene activator protein (C) ... holoenzyme (D) Binding to repressor subunits so that the repressor cannot attach to the operator locus

Last Answer : Answer : D

The enzymes encoded by z, y and a genes of lac operon are inducible, and their inducer is (A) Lactose (B) Allo-lactose (C) Catabolite gene activator protein (D) All of these

Description : The enzymes encoded by z, y and a genes of lac operon are inducible, and their inducer is (A) Lactose (B) Allo-lactose (C) Catabolite gene activator protein (D) All of these

Last Answer : Answer : B

Trancription of z, y and a genes of lac operon is prevented by (A) Lactose (B) Allo-lactose (C) Repressor (D) cAMP

Description : Trancription of z, y and a genes of lac operon is prevented by (A) Lactose (B) Allo-lactose (C) Repressor (D) cAMP

Last Answer : Answer : C

Intest ina l absorption of calcium is hampered by (A) Phosphate (B) Phytate (C) Proteins (D) Lactose

Description : Intest ina l absorption of calcium is hampered by (A) Phosphate (B) Phytate (C) Proteins (D) Lactose

Last Answer : Answer : B

The best known cause of galactosemia is the deficiency of (A) Galactose 1-phosphate and uridyl transferase (B) Phosphoglucomutase (C) Galactokinase (D) Lactose synthase

Description : The best known cause of galactosemia is the deficiency of (A) Galactose 1-phosphate and uridyl transferase (B) Phosphoglucomutase (C) Galactokinase (D) Lactose synthase

Last Answer : Answer : A

The substrate for amylase is (A) Cane sugar (B) Starch (C) Lactose (D) Ribose

Description : The substrate for amylase is (A) Cane sugar (B) Starch (C) Lactose (D) Ribose

Last Answer : Answer : B

There can be intolerance with respect to the following sugar: (A) Glucose (B) Lactose (C) Maltose (D) Xylose

Description : There can be intolerance with respect to the following sugar: (A) Glucose (B) Lactose (C) Maltose (D) Xylose

Last Answer : Answer : B

Milk sugar is known as (A) Fructose (B) Glucose (C) Sucrose (D) Lactose

Description : Milk sugar is known as (A) Fructose (B) Glucose (C) Sucrose (D) Lactose

Last Answer : Answer : D

LCAT is (A) Lactose choline alamine transferse (B) Lecithin cholesterol acyl transferase (C) Lecithin carnitine acyl transferase (D) Lanoleate carbamoyl acyl transferase

Description : LCAT is (A) Lactose choline alamine transferse (B) Lecithin cholesterol acyl transferase (C) Lecithin carnitine acyl transferase (D) Lanoleate carbamoyl acyl transferase

Last Answer : Answer : B

Milk is a good source of (A) Proteins, calcium and iron (B) Proteins, calcium and ascorbic acid (C) Proteins, lactose and retinol (D) Proteins, lactose and essential fatty acids

Description : Milk is a good source of (A) Proteins, calcium and iron (B) Proteins, calcium and ascorbic acid (C) Proteins, lactose and retinol (D) Proteins, lactose and essential fatty acids

Last Answer : Answer : C

A dissaccharide linked by α-1-4 Glycosideic linkages is (A) Lactose (B) Sucrose (C) Cellulose (D) Maltose

Description : A dissaccharide linked by α-1-4 Glycosideic linkages is (A) Lactose (B) Sucrose (C) Cellulose (D) Maltose

Last Answer : D

Invert sugar is (A) Lactose (B) Mannose (C) Fructose (D) Hydrolytic product of sucrose

Description : Invert sugar is (A) Lactose (B) Mannose (C) Fructose (D) Hydrolytic product of sucrose

Last Answer : D

Which of the following is not reducing sugar? (A) Lactose (B) Maltose (C) Sucrose (D) Fructose

Description : Which of the following is not reducing sugar? (A) Lactose (B) Maltose (C) Sucrose (D) Fructose

Last Answer : C

On boiling Benedict’s solution is not reduced by (A) Sucrose (B) Lactose (C) Maltose (D) Fructose

Description : On boiling Benedict’s solution is not reduced by (A) Sucrose (B) Lactose (C) Maltose (D) Fructose

Last Answer : A

UDP Glucuronic acid is required for the biosynthesis of (A) Chondroitin sulphates (B) Glycogen (C) Lactose (D) Starch

Description : UDP Glucuronic acid is required for the biosynthesis of (A) Chondroitin sulphates (B) Glycogen (C) Lactose (D) Starch

Last Answer : A

Which of the following reaction gives lactose? (A) UDP galactose and glucose (B) UDP glucose and galactose (C) Glucose and Galactose (D) Glucose, Galactose and UTP

Description : Which of the following reaction gives lactose? (A) UDP galactose and glucose (B) UDP glucose and galactose (C) Glucose and Galactose (D) Glucose, Galactose and UTP

Last Answer : A

Blood group substances consist of (A) Lactose (B) Maltose (C) Fructose (D) Mucose

Description : Blood group substances consist of (A) Lactose (B) Maltose (C) Fructose (D) Mucose

Last Answer : C

On boiling Benedict’s solution is not reduced by (A) Sucrose (B) Lactose (C) Maltose (D) Fructose

Description : On boiling Benedict’s solution is not reduced by (A) Sucrose (B) Lactose (C) Maltose (D) Fructose

Last Answer : A

Honey contains the hydrolytic product of (A) Lactose (B) Maltose (C) Inulin (D) Starch

Description : Honey contains the hydrolytic product of (A) Lactose (B) Maltose (C) Inulin (D) Starch

Last Answer : C

Which of the following is an epimeric pair? (A) Glucose and fructose (B) Glucose and galactose (C) Galactose and mannose (D) Lactose and maltose

Description : Which of the following is an epimeric pair? (A) Glucose and fructose (B) Glucose and galactose (C) Galactose and mannose (D) Lactose and maltose

Last Answer : B

A carbohydrate, known commonly as invert sugar, is (A) Fructose (B) Sucrose (C) Glucose (D) Lactose

Description : A carbohydrate, known commonly as invert sugar, is (A) Fructose (B) Sucrose (C) Glucose (D) Lactose

Last Answer : B

A carbohydrate found only in milk is (A) Glucose (B) Galactose (C) Lactose (D) Maltose

Description : A carbohydrate found only in milk is (A) Glucose (B) Galactose (C) Lactose (D) Maltose

Last Answer : C

Osazones are not formed with the (A) Glucose (B) Fructose (C) Sucrose (D) Lactose

Description : Osazones are not formed with the (A) Glucose (B) Fructose (C) Sucrose (D) Lactose

Last Answer : C

A positive Seliwanoff’s test is obtained with (A) Glucose (B) Fructose (C) Lactose (D) Maltose

Description : A positive Seliwanoff’s test is obtained with (A) Glucose (B) Fructose (C) Lactose (D) Maltose

Last Answer : B

A positive Benedict’s test is not given by (A) Sucrose (B) Lactose (C) Maltose (D) Glucose

Description : A positive Benedict’s test is not given by (A) Sucrose (B) Lactose (C) Maltose (D) Glucose

Last Answer : A

Which of the following is a non-reducing sugar? (A) Isomaltose (B) Maltose (C) Lactose (D) Trehalose

Description : Which of the following is a non-reducing sugar? (A) Isomaltose (B) Maltose (C) Lactose (D) Trehalose

Last Answer : D

Invert sugar is (A) Lactose (B) Sucrose (C) Hydrolytic products of sucrose (D) Fructose

Description : Invert sugar is (A) Lactose (B) Sucrose (C) Hydrolytic products of sucrose (D) Fructose

Last Answer : C

The sugar found in milk is (A) Galactose (B) Glucose (C) Fructose (D) Lactose

Description : The sugar found in milk is (A) Galactose (B) Glucose (C) Fructose (D) Lactose

Last Answer : D

In which of the following is mental retardation an expected finding? 1) Alkaptonuria 2) Cystinuria 3) Glycogen storage disease 4) Lactose intolerance 5) Maple syrup urine disease

Description : In which of the following is mental retardation an expected finding? 1) Alkaptonuria 2) Cystinuria 3) Glycogen storage disease 4) Lactose intolerance 5) Maple syrup urine disease

Last Answer : Answers-5 MENTAL RETARDATION. Fragile X syndrome-commonest male cause. Hypoxia at birth, intaventricular haemorrhage, rhesus disease, Congenital infections - toxoplasmosis, CMV, rubella ... with diet. -homocystinuria, phenylketonuria -maple syrup urine disease, tryptophanuria -galactosaemia