3593 + Interview Questions in BIOMOLECULES IN GENERAL AWARENESS Page 67 InterviewSolution

3301.	Assertion `:` All enzymes are proteins but all proteins are not enzymes. Reason`:` Keratin is an enzyme.A. Both assertion and reason correct and the reason is correct expansion to assertion.B. Both assertion and reason are correct but reason is not the correct expansion of assertion.C. Assertion is correct but reason is wrongD. Assertion is incorrect but reason is correct.
Answer» Correct Answer - C Coorect Reason: Only globular proteins which catalyst biochemical reactions are called enzymes.

Discussion

3302.	Michaelis constant `(K_(m))` value of enzyme is substrate concentration at which velocity of reaction isA. `v_(max)`B. One third `v_(max)`C. Half `v_(max)`D. One fifth `v_(max)`
Answer» Correct Answer - C

Discussion

3303.	Enzymes catalysing the breakdown of larger molecules into smaller molecules areA. HydrolasesB. IsomerasesC. LigaseD. Both (1) & (3)
Answer» Correct Answer - A

Discussion

3304.	Read the following : (a) Low temperature preserves the enzyme (b) Enzyme gets denatured at high temperature (c ) Enzyme gets dnatured at high temperature (d) Competitive inhibitor competes with the product formed Which of the following statement are true ?A. (a) & (c )B. (b) & (d)C. (c ) & (d)D. (a) & (b)
Answer» Correct Answer - A

Discussion

3305.	Answer the following queries about proteins‐ (i) How are proteins related to amino acids?(ii) When is protein said to be denatured?
Answer» (i) Proteins consist of large number of amino acids linked to each other by peptide linkage, having 3‐ dimensional structure. Thus, proteins are biopolymers of amino acids. (ii) When nature proteins are subjected to the action of heat, acids or alkalies, they are coagulated or precipitated. The protein in this state is said to be denatured. During denaturation process the water soluble form of globular protein change to water insoluble fibrous protein.

3305.

Answer the following queries about proteins‐ (i) How are proteins related to amino acids?(ii) When is protein said to be denatured?

Answer»

(i) Proteins consist of large number of amino acids linked to each other by peptide linkage, having 3‐ dimensional structure. Thus, proteins are biopolymers of amino acids.

(ii) When nature proteins are subjected to the action of heat, acids or alkalies, they are coagulated or precipitated. The protein in this state is said to be denatured. During denaturation process the water soluble form of globular protein change to water insoluble fibrous protein.

Discussion

3306.	Proteins are denatured in theA. mouthB. stomachC. small intestineD. large intestine
Answer» Correct Answer - B Proteins are denatured in the stomach due to highly acidic medium

Discussion

3307.	Assertion : Enzymes become denatured at high temperature . Reason : the tertiary structure of proteins gets damaged at high temperature .A. If both assertion and Reason are true and the Reason is the correct explanation of the assertion .B. If both Assertion and Reason ate true , but the reason is not the correct explanation of the assertion .C. If Assertion is true , but Reason is falseD. if both Assertion and Reason are false.
Answer» Correct Answer - A

Discussion

3308.	In E. coli DNA has 18% of bases of cytosine. What will be the fraction of adenine?A. 0.18B. 0.32C. 0.36D. data insufficient
Answer» Correct Answer - B

Discussion

3309.	Which of the following acids is a vitamin?A. Aspartic acidB. Ascorbic acidC. Adipic acidD. Saccharic acid
Answer» Correct Answer - B Ascorbic acid is vitamin C.

Discussion

3310.	Sulphur containing amino acids areA. valine,lysine and cystineB. tryptophan, glutamic acid, aspratic acidC. citrulline, methionine and glumaric acidD. cysteine, cystine, methionime
Answer» Correct Answer - D

Discussion

3311.	Essential amino acids are those which our body and, therefore, we taken them from diet . These are usually seven in number and are .A. lecuine, lysine, isolecuine ,valine , tryptophan, tophan, phenylalanine , methionineB. lecukine-lysin-isoleucine-valine-tryptophan-phenylalanine -glycine.C. gly-ala-val-his-try-asp-metD. none of the above
Answer» Correct Answer - A

Discussion

3312.

Differentiate between essential and non essential amino acids.

Answer»

Essential amino acids	Non-essential amino acids
(a) These are the amino acids that are not synthesized in the body.	(a) These are the amino acids that are synthesized in the body.
(b) Dietary proteins form the source of essential amino acids.	(b) They need not be taken in the diet.

Discussion

3313.	Most of the vitamins are not synthesized in our bodies but the one which is readily synthesized isA. vitamin DB. vitamin `B_(1)`C. vitamin CD. vitamin `B_(2)`
Answer» Correct Answer - A Vitamin `D` way be supplied through food or may be produced in the skin irradiation of sterols with sunlight (ultraviolet light). The chemical name of vitamin `D` is calciferol

Discussion

3314.	Assertion : Hemoglobin is a monomeric protein . Reason : It is made up of two polypeptide chains .A. If both assertion and Reason are true and the Reason is the correct explanation of the assertion .B. If both Assertion and Reason ate true , but the reason is not the correct explanation of the assertion .C. If Assertion is true , but Reason is falseD. if both Assertion and Reason are false.
Answer» Correct Answer - C

Discussion

3315.	Denaturation of protein leads to loss of its biological activity by :-A. formation of amino acidsB. loss of primary structureC. loss of both primary and secondary structuresD. loss of both secondary and tertiary structures
Answer» Correct Answer - D Upon heating, the protein get coagulated. This process is called denaturation of proteins. During this process, the secondary and tertiary structures get destroyed but primary structure remains intact.

Discussion

3316.	The vitamin which is water-soluble and is an anitoxidant isA. vitamin EB. vitamin CC. vitamin `B_(1)`D. vitamin D
Answer» Correct Answer - B Vitamin `C` is also called ascorbic acid. It is believed to cure common cold. Citrus fruits are a good source of vitamin `C`. Scurvy is caused due to the deficiency of ascorbic acid which does not possess a carboxy group but contains a five membered lactone, ring Vitamin `C`, a water soluble vitamin, is as an antioxidant because it acts as a free - radical inhibitor in a human body. All the water- soluble vitamins function as coenzymes except vitamin `C`. vitamin `C` is required by a living body in farily high amount and most mammals except human and guniea pig are albe to synthesize it. Vitamin `E` is fat - soluble and is an antioxidant as it also acts as a free-radical inhibitor in a human body. The chemical name of vitamin `E`, which does not function as a coenzymes, it tocopherol. Deficiency of vitamin `E` cases sterility. Vitamin `C` traps radicals formed in aqueous environment while vitamin `E` traps radicals formed in nonpolar environment. Vitamin `B_(1)` is also known as thiamine of anitneutirc factor. Beriberi is casued due to the deficiency of vitamin `B_(1)` which contains both `N` and `S`. Note that vitamin `B_(2)` contains only nitrogen. Rice coverings or husks are rich in Vitamin `B_(1)`. Vitamin `D`, fat-soluble vitamin, regulates the metabolism of calcium and phosphate. Deficiency of vitamin `D` in human i.e., the deficiency fo vitamin `D` causes rickets. Excess of vitamin `D` in human body causes calcification of soft tissues particularly in the kidneys. Vitamin `D` is formed in the skin as a result of photochemical reactions of 7 - dehydrocholesterol casued by the ultraviolet rays from the sun..

Discussion

3317.	The chemical name of vitamin `B_1` isA. ascorbic acidB. pyridoxineC. riboflavinD. thiamine
Answer» Correct Answer - D Vitamin `B_1` Is also known as thiamine.

Discussion

3318.	The correct statements about anomers areA. Anomers have different stereochemistry at `C-1` (anomeric carbon)B. `alpha-D`glucopyranose and `beta-D-`glucopyranose can be crystallised and purifiedC. When pure `alpha-D-`glucopyranose is dissolved in water is optical rotation slowly changesD. When pure `alpha`-D-glucopyranose and one carboxylic acid, group are available for reaction, then only one dipeptide can forms.
Answer» Correct Answer - A::B::C::D Carbohydrate having different stereochemistry at `C-1` are termed as Animers. Whereas when stereochemistry at any other carbon is different then those carbohydrates are known as epimers.

Discussion

3319.	Which of the following statement is false?A. `alpha`-carbon of `alpha`-amino acid is asymmetricB. All proteins are found in L-formC. Human body can synthesise all proteins they needD. At pH= 7, both amino acid and carboxylic groups exist in ionised form
Answer» Correct Answer - B All proteins are not found in L-form but they may be present in form of D or L.

Discussion

3320.	The spatial arrangement of the two or more polypeptide chains with respect to each other is known asA. primary structureB. secondary structureC. tertiary structureD. quaternary structure
Answer» Correct Answer - D Some of the proteins are composed of two or more polypeptide chains referred to as subunits. The spatial arrangement of these subunits with respect to each other is known as quarternary structure.

Discussion

3321.	The vitamin which is water-soluble and is an anitoxidant isA. Vitamin EB. Vitamin DC. Vitamin CD. Vitamin `B_1`
Answer» Correct Answer - C Vitamin C is water soluble vitamin. It also acts as an antioxidant.

Discussion

3322.	Protein present in hair isA. albuminB. globulinC. keratinD. chromoprotein
Answer» Correct Answer - C Protein present in hair is keratin.

Discussion

3323.	In an alkaline medium, glycine predominantly exists as/in a/anA. cationB. anionC. Zwitter ionD. covalent form
Answer» Correct Answer - B In alkaline medium glycine predominently exists as an anion. `H_3overset+N -CH_2-COO^(-) + OH^(-) to underset"Anion"(H_2 ddotN- CH_2-COO^(-)+H_2O)`

Discussion

3324.	Which of the following are polyamide polymer ?A. ProteinB. nylon-6,6C. Nylon-6D. Polystyrene
Answer» Correct Answer - A::B::C Nylon-6,Nylon-6,6 and protein are a polyamide molecule.

Discussion

3325.	Biuret test is used for the detection of :A. sugarB. proteinsC. fatsD. starch
Answer» Correct Answer - B

Discussion

3326.	…………… test is used as an indicator of the presence of protein. (a) Biuret test (b) Iodine test (c) Benedict’s test (d) Starch test
Answer» (a) Biuret test

Discussion

3327.	Biuret test is not given by :A. carbohydratesB. polypeptidesC. ureaD. proteins
Answer» Correct Answer - A Biuret test is characteristically given by the compound having `-oversetoverset(O)(\|\|)C-NH-` functional group

Discussion

3328.	Biuret test is not given by:A. proteinsB. ureaC. polypeptideD. carbohydrates
Answer» Correct Answer - D All compound contaning `-CONH` (peptide) bond give Biuret test.

Discussion

3329.	The presence or absence of hydroxy group on which carbon atom of sugar differentiates `RNA` and `DNA`.A. `1^(st)`B. `2^(nd)`C. `3^(rd)`D. `4^(th)`
Answer» Correct Answer - B In RNA, the OH group is present in `C_(2)` cxarbonation of ribose sugar while it is absent in DNA.

Discussion

3330.	At pH 4, glycine exists asA. `H_(3)N^(+)-CH_(2)CO O^(-)`B. `H_(3)N^(+)-CH_(2)CO OH`C. `H_(2)NCH_(2)CHO OH`D. `H_(2)NCH_(2)CO O^(-)`
Answer» Correct Answer - B In the acidic medium `(DeltaH=4), C ClO^(-)` groups is protonated. `H_(3)overset(+)(N)-CH_(2)CO O^(-) overset(H^(+))hArr H_(3)overset(+)(N)-CH_(2)CO OH`

Discussion

3331.	Which one of the following is not correct ?A. D(-) Fructose exists in furanose structureB. D(+) Glucose exists in pyranose structure.C. In sucrose the two monosaccharides are held together by peptide linkageD. Maltose is a reducing sugar.
Answer» Correct Answer - C The linkage between monosaccharide units is called glycosidic linkage

Discussion

3332.	What are phospholipids?A. two -OH group of glycerol are esterified by fatty acidsB. One OH group of glycerol is esterified by fatty acidsC. Three OH groups of glycerol are esterified by fatty acidsD. No any OH group of glycerol is esterified
Answer» Correct Answer - A

Discussion

3333.	Biuret test is not given by :A. ProteinsB. carbohydratesC. polypeptidesD. urea
Answer» Correct Answer - B Biuret test is the characteristic test tor the amide linkage. Since there is no amide linkage in carbohydrates, they donot give this test.

Discussion

3334.	Which of the following pair is (are) correctly matchedA. `alpha-D(+)` glucose and `beta-D(+)` glucose `rarr C-2` epimersB. Glucose and fructose `rarr C-3` epimersC. Glucose `rarr` mutarotationD. Sucrose `rarr` Glucose `+` fructose
Answer» Correct Answer - C::D Glucose shows mutarotation, sucrose gives glucose and fructose on hydrolysis.

Discussion

3335.	The correct structure of glycine at given `pH` are :A. `H_(3) overset(oplus)(N)CH_(2)-underset(underset(O)(\|\|))(C)-OH" "at pH=2.0`B. `H_(3)overset(oplus)(N)CH_(2)-underset(underset(O)(\|\|))(C)-O^(Theta)" "at pH=6.0`C. `H_(2)NCH_(2)-underset(underset(O)(\|\|))(C)-O^(Theta)`D. `H_(2)NCH_(2)-underset(underset(O)(\|\|))(C)-OH" "atpH=12`
Answer» Correct Answer - A::B::C At acidic `pH`, glycine will convert to cation and at basic `pH` glycine will convert to anion.

Discussion

3336.	Which one of the following vitamins is water-soluble?A. Vitamin AB. Vitamin B complexC. Vitamin DD. Vitamin E
Answer» Correct Answer - C Fat soluble vitamins are soluble in fat and oils but insoluble in water. These are vitamins `A,D,E` and `K`. On the other hand, `B` group vitamins and vitamins `C` are soluble in water.

Discussion

3337.	Which of the following are disaccharides?A. GlucoseB. Canesugar MaltoseC. MaltoseD. starch
Answer» Correct Answer - B::C

Discussion

3338.	What are phospholipids?
Answer» Phospholipids are phosphoric esters and are composed of glycercol. Fatty acids, phophoric acids, and a nitrogen-containing compound. They facilitate the transport of ions and molecules in and out of the cell.

Discussion

3339.	Which one of the following statements is not true regarding `( +)` Lactose ?A. On hydrolysis (+) lactose gives equal amoun of D(+) glucose and D(+) galactose.B. (+)Lactose is a `beta`-glucoside formed by the union of a molecule of D(+) glucose and a molecule of D(+) galactose.C. (+) Lactose is a reducing sugar and does not exhibit mutarotation.D. (+)Latose, `C_(12)H_(22)O_(11)` contains-8-OH groups.
Answer» Correct Answer - C (+) Lactose is a reducing sugar and exhibits mutarotation.

Discussion

3340.	Name the chemical components which constitute nucleotides. Write any two functions of nucleotides in a cell.
Answer» Nucleotides are made up of a heterocyclic base containing nitrogen, a five carbon atom – moeity and a phosphate group. Example: 1. AMP (adenosine monophosphate) 2. ADP (adenosine diphosphate) and 3. ATP (adenosine triphospate) Functions: 1. Act as energy carriers 2. They synthesise proteins

3340.

Name the chemical components which constitute nucleotides. Write any two functions of nucleotides in a cell.

Answer»

Nucleotides are made up of a heterocyclic base containing nitrogen, a five carbon atom – moeity and a phosphate group.

Example:

1. AMP (adenosine monophosphate)

2. ADP (adenosine diphosphate) and

3. ATP (adenosine triphospate)

Functions:

1. Act as energy carriers

2. They synthesise proteins

Discussion

3341.	Which of these are polysaccharides of glucose ?A. StarchB. CelluloseC. SucroseD. Lactose
Answer» Correct Answer - A::B Sucrose and lactose are disaccharides.

Discussion

3342.	Which one of the following statements is not true regarding `( +)` Lactose ?A. On hydrolysis , (+)lactose gives equal amount of D(+) glucose and D(+) galactose .B. (+) Lactose is a `beta`-glucoside formed by the union of a molecule of D(+) glucose and a molecule of D(+) galactose.C. (+) Lactose is a reducing sugar and does not exhibit mutarotation .D. (+) Lactose ,`C_(12)H_(22)O_(11)` contains 8-OH groups.
Answer» Correct Answer - C `(+)` Lactose is a reducing sugar and all reducing sugar shows mutarotation.

Discussion

3343.	Which one of the following statements is not true regarding `(+) -` Lactose?A. `(+) -` Lactose, `C_(12) H_(22) O_(11)`, contains `8 - OH` groupsB. On hydrolysis, `(+) -` Lactose gives equal amount of `D- (+) -` glucose and `D- (+) -` galactoseC. `(+) -` Lactose is a `beta`-glycoside formed by the union of a molecule of `D - (+) -` glucose and a molecule of `D- (+) -` galactoseD. `(+) -` Lactose is a reducing sugar and does not exhibit mutarotation
Answer» Correct Answer - D `(+)-` Lactose `(C_(12) H_(22) O_(11))` is a reducing sugar, forms an osazone, and exists in alpha and beta forms which undergo mutarotation. In fact all reducing sugars undergo mutarotation. Acidic hydrolysis or treatment with emulsin (which splits `beta`- linkage only) converts `(+)-` lactose into equal amounts of `D-(+)-` gluose and `D-(+)-` glucose.

Discussion

3344.	Give two examples of disaccharides.
Answer» Sucrose, maltose, and lactose

Discussion

3345.

Write the chemical name, sources and deficient disease of the following.1. Vitamin D 2. Vitamin E 3. Vitamin K

Answer»

The chemical name, sources and deficient disease are:

No.	Vitamins	Chemical Name	Rich Sources	Deficient disease
i.	Vitamin D	Calciferol	Fish, liveroil, milk, egg yolk, sunlight exposure	Rickets, osteomalacia
ii.	Vitamin E	Tocopherol	Cotton seed oil, sunflower oil, wheat germ oil, vegetable oil	Muscular dystrophy, neurological dysfunction
iii.	Vitamin K	Phylloquinome	Green leafy vegetables, soya bean oil, tomato	Increase blood clotting time, haemorrhagix disease

Discussion

3346.

Name the main disease caused due to lack of vitamin and its source in each of the following. (i) A, (ii) B6 (iii) E.

Answer»

The main disease caused due to lack of vitamin and its sources are:

Vitamin	Deficiency	Sources
Vitamin A	Night blindness	Carrot, fish liver oil
Vitamin B₆	Convulsions	Cereals, grams, yeast etc.
Vitamin E	Loss of reproductive power	Germ oil, cotton seed oil

Discussion

3347.	Which one of the following deficient disease of Vitamin A? (a) Cheilosis (b) Xerophthalmia (c) Convulsions (d) Perncious Anaemia
Answer» (b) Xerophthalmia

Discussion

3348.	What is a peptide bond?
Answer» `CO-NH` is called a peptide of protiens.

Discussion

3349.

Classify the following into monosaccharides, oligosaccharides and polysaccharides :(1) Starch (2) Glucose (3) Stachyose (4) Maltose (5) Raffinose(6) Cellulose (7) Sucrose (8) Lactose.

Answer»

Monosaccharides	Glucose
Oligosaccharides	Stachyose, maltose, raffinose, sucrose, lactose
Polysaccharides	Starch, cellulose

Discussion

3350.	Which one of the following sets of monosaccharides forms sucrose ?A. `alpha-D-` galactopyranose and `alpha-D-` glucopyranoseB. `alpha-D-` glucopyranose and `beta-D-` fructofuranoseC. `beta-D-` glucopyranose and `alpha-D-` fructofuranoseD. `alpha-D-` glucopyranose and `beta-D-` fructopyranose.
Answer» Correct Answer - B These are the monomer units of sucrose linked by glycosidic linkage.

Discussion

Explore topic-wise InterviewSolutions in .

Michaelis constant `(K_(m))` value of enzyme is substrate concentration at which velocity of reaction isA. `v_(max)`B. One third `v_(max)`C. Half `v_(max)`D. One fifth `v_(max)`

Enzymes catalysing the breakdown of larger molecules into smaller molecules areA. HydrolasesB. IsomerasesC. LigaseD. Both (1) & (3)

Answer the following queries about proteins‐ (i) How are proteins related to amino acids?(ii) When is protein said to be denatured?

Proteins are denatured in theA. mouthB. stomachC. small intestineD. large intestine

In E. coli DNA has 18% of bases of cytosine. What will be the fraction of adenine?A. 0.18B. 0.32C. 0.36D. data insufficient

Which of the following acids is a vitamin?A. Aspartic acidB. Ascorbic acidC. Adipic acidD. Saccharic acid

Sulphur containing amino acids areA. valine,lysine and cystineB. tryptophan, glutamic acid, aspratic acidC. citrulline, methionine and glumaric acidD. cysteine, cystine, methionime

Differentiate between essential and non essential amino acids.

Most of the vitamins are not synthesized in our bodies but the one which is readily synthesized isA. vitamin DB. vitamin `B_(1)`C. vitamin CD. vitamin `B_(2)`

Denaturation of protein leads to loss of its biological activity by :-A. formation of amino acidsB. loss of primary structureC. loss of both primary and secondary structuresD. loss of both secondary and tertiary structures

The vitamin which is water-soluble and is an anitoxidant isA. vitamin EB. vitamin CC. vitamin `B_(1)`D. vitamin D

The chemical name of vitamin `B_1` isA. ascorbic acidB. pyridoxineC. riboflavinD. thiamine

Which of the following statement is false?A. `alpha`-carbon of `alpha`-amino acid is asymmetricB. All proteins are found in L-formC. Human body can synthesise all proteins they needD. At pH= 7, both amino acid and carboxylic groups exist in ionised form

The spatial arrangement of the two or more polypeptide chains with respect to each other is known asA. primary structureB. secondary structureC. tertiary structureD. quaternary structure

The vitamin which is water-soluble and is an anitoxidant isA. Vitamin EB. Vitamin DC. Vitamin CD. Vitamin `B_1`

Protein present in hair isA. albuminB. globulinC. keratinD. chromoprotein

In an alkaline medium, glycine predominantly exists as/in a/anA. cationB. anionC. Zwitter ionD. covalent form

Which of the following are polyamide polymer ?A. ProteinB. nylon-6,6C. Nylon-6D. Polystyrene

Biuret test is used for the detection of :A. sugarB. proteinsC. fatsD. starch

…………… test is used as an indicator of the presence of protein. (a) Biuret test (b) Iodine test (c) Benedict’s test (d) Starch test

Biuret test is not given by :A. carbohydratesB. polypeptidesC. ureaD. proteins

Biuret test is not given by:A. proteinsB. ureaC. polypeptideD. carbohydrates

The presence or absence of hydroxy group on which carbon atom of sugar differentiates `RNA` and `DNA`.A. `1^(st)`B. `2^(nd)`C. `3^(rd)`D. `4^(th)`

At pH 4, glycine exists asA. `H_(3)N^(+)-CH_(2)CO O^(-)`B. `H_(3)N^(+)-CH_(2)CO OH`C. `H_(2)NCH_(2)CHO OH`D. `H_(2)NCH_(2)CO O^(-)`

Which one of the following is not correct ?A. D(-) Fructose exists in furanose structureB. D(+) Glucose exists in pyranose structure.C. In sucrose the two monosaccharides are held together by peptide linkageD. Maltose is a reducing sugar.

What are phospholipids?A. two -OH group of glycerol are esterified by fatty acidsB. One OH group of glycerol is esterified by fatty acidsC. Three OH groups of glycerol are esterified by fatty acidsD. No any OH group of glycerol is esterified

Biuret test is not given by :A. ProteinsB. carbohydratesC. polypeptidesD. urea

Which of the following pair is (are) correctly matchedA. `alpha-D(+)` glucose and `beta-D(+)` glucose `rarr C-2` epimersB. Glucose and fructose `rarr C-3` epimersC. Glucose `rarr` mutarotationD. Sucrose `rarr` Glucose `+` fructose

Which one of the following vitamins is water-soluble?A. Vitamin AB. Vitamin B complexC. Vitamin DD. Vitamin E

Which of the following are disaccharides?A. GlucoseB. Canesugar MaltoseC. MaltoseD. starch

What are phospholipids?

Name the chemical components which constitute nucleotides. Write any two functions of nucleotides in a cell.

Which of these are polysaccharides of glucose ?A. StarchB. CelluloseC. SucroseD. Lactose

Give two examples of disaccharides.

Write the chemical name, sources and deficient disease of the following.1. Vitamin D 2. Vitamin E 3. Vitamin K

Name the main disease caused due to lack of vitamin and its source in each of the following. (i) A, (ii) B6 (iii) E.

Which one of the following deficient disease of Vitamin A? (a) Cheilosis (b) Xerophthalmia (c) Convulsions (d) Perncious Anaemia

What is a peptide bond?

Classify the following into monosaccharides, oligosaccharides and polysaccharides :(1) Starch (2) Glucose (3) Stachyose (4) Maltose (5) Raffinose(6) Cellulose (7) Sucrose (8) Lactose.

Which one of the following sets of monosaccharides forms sucrose ?A. `alpha-D-` galactopyranose and `alpha-D-` glucopyranoseB. `alpha-D-` glucopyranose and `beta-D-` fructofuranoseC. `beta-D-` glucopyranose and `alpha-D-` fructofuranoseD. `alpha-D-` glucopyranose and `beta-D-` fructopyranose.