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.

1 Answer

Answer :

Amylose is a straight-chain polysaccharide while amylopectin is a branched
polysaccharide

Related questions

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

Description : A polymeric unit of starch which has a branched structure is (A) Glucose (B) Amylopectin (C) Isomaltose (D) Amylose

Last Answer : Answer : B

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

Description : Amylose contains glucose units (A) 100–200 (B) 200–300 (C) 300–400 (D) 500–600

Last Answer : C

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

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

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

Last Answer : A

Description : . In a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher (A) Densities (B) Melting point (C) Tensile strength (D) Hardness, rigidity & brittleness

Last Answer : (D) Hardness, rigidity & brittleness

Description : After the action of phosphorylase, glycogen is converted into (A) Amylopectin (B) dextrin (C) Amylose (D) Maltose

Last Answer : Answer : B

Description : Give one example of branched polysaccharide.

Last Answer : Ans. - Starch 

Description : Each branch of amylopectin is at an interval of glucose units: (A) 14–20 (B) 24–30 (C) 34–40 (D) 44–50

Last Answer : B

Description : In amylopectin the intervals of glucose units of each branch is (A) 10–20 (B) 24–30 (C) 30–40 (D) 40–50

Last Answer : B

Description : What is the glycosidic linkage in sucrose?

Last Answer : 1-2 linkage.

Description : What is the glycosidic linkage in lactose?

Last Answer : Beta 1-4 linkage.

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

Description : Choose the correct statement. (A) Octane number of i-octane is zero (B) Octane number of paraffins increases with increasing number of carbon atoms (C) Branched chain paraffins have higher octane ... atoms (D) The aromatics have lower octane number than naphthenes with same number of carbon atoms

Last Answer : (A) Octane number of i-octane is zero

Description : Which of the following statements is true about terpenes? (a) They are a class of lipids that can be isolated from plants. (b) They contain carbon atoms in multiples of five. (c) They are composed of isoprene units joined together in a head-to-tail fashion. (d) All of the above

Last Answer : All of the above

Description : Lactose is composed of (a) glucose + galactose (b) fructose + galactose (c) glucose + fructose (d) glucose + glucose.

Last Answer : (a) glucose + galactose

Description : A polysaccharide which is synthesized and stored in liver cells is (a) arabinose (b) glycogen (c) lactose (d) galactose.

Last Answer : (b) glycogen

Description : A modified amino acid solution with increased equimolar branched-chain amino acids and decreased aromatic amino acids has been proposed for patients with hepatic insufficiency. Which of the following ... D. In some studies of surgical patients, improvements in mortality have been reported.

Last Answer : Answer: D DISCUSSION: The use of modified amino acid solutions is based on the false neurotransmitter hypothesis of the cause of hepatic coma. According to this hypothesis, the imbalance ... in a group of patients with cirrhosis, decreasing morbidity and showing a trend toward decreased mortality

Description : Whcih of the following features are common to monosaccharides? (A) Contain asymmetric centres (B) Are of 2 types – aldoses and ketoses (C) Tend to exist as ring structures in solution (D) Include glucose, galactose and raffinose

Last Answer : C

Description : Ripe grapes contain – (1) Fructose (2) Sucrose (3) Galactose (4) Glucose

Last Answer : (1) Fructose Explanation: Fully mature or ripe grapes contain about an equal concentration of glucose and fructose, which are the simple sugars yeast ferment to form alcohol and carbon dioxide. Ripe ... carbon sugars but three, four, five and seven-carbon sugars are also present in the grape.

Description : Ripe grapes contain (1) Fructose (2) Sucrose (3) Galactose (4) Glucose

Last Answer : Fructose

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

Last Answer : B

Description : A carbohydrate composed of three to ten sugar molecules is called a(n) : (a) disaccharide (b) oligosaccharide (c) polysaccharide (d) monosaccharide

Last Answer : oligosaccharide

Description : Streptococcus mutans utilises which subtract to form dextran, Refer to Boucher Microbiology A. Glucose B. Fructose C. Sucrose D. Amylopectin E. Dextrans

Last Answer : C. Sucrose

Description : Which of the following methods can be used to increase the octane rating of gasoline? (a) Adding branched-chain alkanes (b) Adding tetraethyllead (c) Adding aromatic hydrocarbons (d) All of these

Last Answer : All of these

Description : Which of the following is the main structural feature of proteins? (a) Peptide linkage (b) Ester linkage (c) Ether linkage (d) α,β-Linkage

Last Answer : Peptide linkage

Description : Which of the following is not a polymer of glucose? (A) Amylose (B) Inulin (C) Cellulose (D) Dextrin

Last Answer : B

Description : The ultimate respiratory substrate, yielding maximum number of ATP molecules, is (a) glycogen (b) ketogenic amino acid (c) glucose (d) amylose.

Last Answer : (c) glucose

Description : .In developing plaque; the adhesive polymer produced by streptococcus mutans is synthesis from: A. Glucose B. Fructose C. Sucrose D. Lactose E. Amylose

Last Answer : C. Sucrose

Description : Select the two correct statements out of the four (i - iv) statements given below about lac operon. (i) Glucose or galactose may bind with the repressor and inactivate it. (ii) In the absence of lactose, the repressor binds with the ... (iii) (b) (i) and (iii) (c) (ii) and (iv) (d) (i) and (ii)

Last Answer : (c) (ii) and (iv)

Description : ______ is a multibranched polysaccharide of glucose that serves as a form of energy storage in animals and fungi. (1) Cellulose (2) Glycogen (3) Pectin (4) Chitin

Last Answer : (2) Glycogen Explanation: Glycogen is a multi branched polysaccharide of glucose that serves as a form of emery storage in humans animals, and fungi.

Description : Which of the following statements is false about α-D-glucose? (a) it has a pyranose ring. (b) it is a hemiacetal. (c) it shows mutarotation. (d) it is the purest form of table sugar.

Last Answer : it is the purest form of table sugar.

Description : The branching enzyme acts on the glycogen when the glycogen chain has been lengthened to between glucose units: (A) 1 and 6 (B) 2 and 7 (C) 3 and 9 (D) 6 and 11

Last Answer : D

Description : Maple syrup urine disease results from absence or serve deficiency of (A) Homogentisate oxidase (B) Phenylalanine hydroxylase (C) Branched chain amino acid transaminase (D) None of these

Last Answer : Answer : D

Description : Branched chain amino acids are (A) Cysteine and cystine (B) Tyrosine and Tryptophan (C) Glycine and Serine (D) Valine, Leucine and Isoleucine

Last Answer : Answer : D

Description : Maple syrup urine diseases is an inborn error of metabolism of (A) Sulphur-containing amino acids (B) Aromatic amino acids (C) Branched chain amino acids (D) Dicarboxylic amino acids

Last Answer : Answer : C

Description : All the following are branched chain amino acids except (A) Isoleucine (B) Alanine (C) Leucine (D) Valine

Last Answer : Answer : B

Description : Which of the following enzyme defects is associated with a characteristic body odour? 1) Phenylalanine aminotransferase 2) Galactose0-phosphate-uridyltransferase 3) Ornithine transcarbamylase deficiency 4) Fumaryl acetoacetase 5) Branched chain ketoacid decarboxylase

Last Answer : Answers-5 The following inborn errors of amino acid metabolism are associated with abnormal odours: Glutaric acidaemia type II (sweaty feet), hawkinsinuria (swimming pool), isovaleric acidaemia (sweaty feet), ... The general rule is that if a child smells peculiar he requires a metabolic work-up.

Description : Branched chain polymers compared to linear polymers have higher (A) Density (B) Tensile strength (C) Melting point (D) Degree of irregularity in atomic packing

Last Answer : (D) Degree of irregularity in atomic packing

Description : Pick out the wrong statement. (A) Linear polymers are formed from bifunctional groups only and are normally thermoplastic (B) Cross-linked branched chain polymers are either elastometric or ... (D) Dibasic acids reacts with dihydric alcohols to give polyesters using addition polymerisation reaction

Last Answer : D) Dibasic acids reacts with dihydric alcohols to give polyesters using addition polymerisation reaction

Description : What are branched chain amino acids?

Last Answer : Valine, leucine and isoleucine.

Description : The phospholipids present in cytoplasm membrane of the archaeo- bacteria is A- phosphoglycerides B- polyisoprenoid C- polyisoprenoid branched chain lipids D- none of the bove

Last Answer : polyisoprenoid branched chain lipids

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

Description : Which of the following statements best describes the meaning of mutarotation ? (a) a rapid exchange between the α and β forms of diastereomeric sugars (b) a rapid exchange between the D ... between hydrogen and deuterated hydrogen (d) a slow change in optical rotation to reach an equilibrium value

Last Answer : a slow change in optical rotation to reach an equilibrium value

Description : Cerebrosides are composed of (A) Sphingosine, fatty acids, glycerol and phosphoric acid (B) Sphingosine, fatty acids, galactose (C) Glycerol, fatty acids, galactose (D) Glycerol, fatty acids, galactose, sphingol

Last Answer : Answer : B

Description : The monosaccharide obtained by hydrolysis of starch is : (a) D-Glucose (b) Maltose (c) D-Galactose (d) D-Ribose

Last Answer : D-Glucose

Description : All of the following monosaccharides give the same osazone except (a) Galactose (b) Glucose (c) Fructose (d) Mannose

Last Answer : Galactose

Description : The principal sugar in blood is (a) Fructose (b) Glucose (c) Sucrose (d) Galactose

Last Answer : Glucose