3593 + Interview Questions in BIOMOLECULES IN GENERAL AWARENESS Page 28 InterviewSolution

1351.	Reducing sugar is
Answer» Correct Answer - Fructose

Discussion

1352.	Raffinose on hydrolysis gives :(a) glucose + glucose + galactose (b) glucose + fructose + galactose (c) glucose + galactose + galactose (d) fructose + galactose + galactose
Answer» Option : (b) glucose + fructose + galactose

Discussion

1353.	The function of enzymes in the living system is toA. transport oxygenB. provide immunityC. catalyse biochemical reactionsD. provide energy
Answer» Correct Answer - C The function of enzymes in living system is to catalyse biochemical reactions.

Discussion

1354.	Raffinose isA. trisaccharideB. disaccharideC. monosaccharideD. polysaccharide
Answer» Correct Answer - A Monosaccharides do not hydrolyse, disaccharides give two molecules of monosaccharides, trisaccharides give three molecules of monosaccharides and polysaccharides give many molecules of monosaccharides on hydrolysis. `underset"Raffinose"(C_18H_32O_16)+H_2O to ` glucose + fructose + galactose `therefore ` Raffinose is a trisaccharide

Discussion

1355.	Glucose exists in how many forms in equilibrium?
Answer» Correct Answer - Three

Discussion

1356.	The pH of human blood isA. `~~2`B. `~~10`C. `~~7.3`D. `~~5.5`
Answer» Correct Answer - C The pH of human body is nearly 7.3

Discussion

1357.	The principal buffer present in human blood isA. Acetiacid / sodium acetateB. `H_(2)CO_(3)//HCO_(3)`C. `NaH_(2)PO_(4)//Na_(2)HPO_(4)`D. `Na_(2)SO_(4)//H_(2)SO_(4)`
Answer» Correct Answer - B The principal buffer present in our blood is `H_(2)CO_(3)//HCO_(3)^(-)` buffer.

Discussion

1358.	Raffinose isA. trisaccharideB. monosaccharideC. disaccharideD. none
Answer» Correct Answer - A Raffinose `(C_(18)H_(32)O_(16))` is a trisaccharide

Discussion

1359.	What is maximum number of monosaccharide unit present in oligosaccharides?
Answer» Correct Answer - 10

Discussion

1360.	Lipids areA. nucleic acids occuring in plantsB. proteins occuring in animalsC. carbohydrates occuring in plantsD. fats of natural origin
Answer» Correct Answer - D Lipids are fats of natural origin.

Discussion

1361.	DNA has deoxyribose, a base and the third component is
Answer» Correct Answer - Phosphoric acid

Discussion

1362.	The two forms of `D-glucopyranose obtained from solution of D-glucose are known as:A. isomersB. anomersC. epimersD. enantiomer
Answer» Correct Answer - B See ring structure of glucose.

Discussion

1363.	The `RNA` which takes part in the synthesis of proteins is:A. m-RNAB. r-RNAC. t-RNAD. all the above
Answer» Correct Answer - D All the three types of RNA s, i.e. m RNA , r RNA and t RNA take part in protein synthesis.

Discussion

1364.	In biological systems, the RNA molecules direct the synthesis of specific proteins which are characteristic of each kind of organism. This process is known asA. transcirptionB. mutationC. replicationD. translation
Answer» Correct Answer - A See translation in nucleic acids.

Discussion

1365.	DNA has deoxyribose, a base and the third component isA. phosphoric acidB. riboseC. adenineD. thymine
Answer» Correct Answer - A DNA has deoxyribose, a base and phosphoric acid.

Discussion

1366.	Which one of the following statements is correct with reference to enzymes? (A) Apoenzyme = Holoenzyme + coenzyme (B) Holoenzyme = Apoenzyme + Coenzyme(C) Coenzyme = Apoenzyme + Holoenzyme (D) Holoenzyme = Coenzyme + Co-factor
Answer» (B) Holoenzyme = Apoenzyme + Coenzyme

Discussion

1367.	Mention the polymer of fructose.
Answer» Inulin is polymer of fructose.

Discussion

1368.	Why cannot cellulose hold l2 molecules?
Answer» Cellulose does no contain complex helices and hence cannot hold l₂ molecules.

Discussion

1369.	Name the chemical present in the exoskeleton of arthropods.
Answer» Chitin is present in the exoskeleton of arthropods.

Discussion

1370.	Give examples for heteropolysaccharide.
Answer» Glucosamine, Chitin.

Discussion

1371.	Which one of the following carbohydrates is a heteropolysaccharide?(A) Cellulose(B) Starch (C) Glycogen (D) Hyaluronic acid
Answer» The correct answer is (D) Hyaluronic acid

Discussion

1372.	Differentiate between homopolysaccharide and heteropolysaccharide?
Answer» The main difference between homopolysaccharides and heteropolysaccharides is: Homopolysaccharide: They are the complex carbohydrates formed by the polymerisation of one type of monosaccharide units. e.g., Starch, glycogen and cellulose. Heteropolysaccharide: They are the complex carbohydrates formed polymerisation of more than one type of monosaccharide units. e.g., Chitin and agar.

1372.

Differentiate between homopolysaccharide and heteropolysaccharide?

Answer»

The main difference between homopolysaccharides and heteropolysaccharides is:

Homopolysaccharide:

They are the complex carbohydrates formed by the polymerisation of one type of monosaccharide units.
e.g., Starch, glycogen and cellulose.

Heteropolysaccharide:

They are the complex carbohydrates formed polymerisation of more than one type of monosaccharide units.
e.g., Chitin and agar.

Discussion

1373.	What are the monomeric units of proteins?
Answer» Amino acids are the monomeric units of proteins.

Discussion

1374.	Where does histone occur?
Answer» Chromosomes .

Discussion

1375.	Some enzyme when secreated are inactive state. Such enzyme in inactive state are called.A. isonzymesB. conezymesC. zymogensD. apenzyme
Answer» Correct Answer - C

Discussion

1376.	Mutases and epimerases areA. isomerasesB. hydrolasesC. lyasesD. ligases
Answer» Correct Answer - A

Discussion

1377.	In a diluated starch solution , `alpha`-salivary amylase is added at ph 1.6 and kept at `35^(@)C` for half an hour and then iodine solution is added, what would be the result?A. There will be a red colourB. There will be bule solutionC. Solution will be clear and colourlessD. The solution will be sweet
Answer» Correct Answer - B

Discussion

1378.	The enzymatic function of a protein is due toA. Primary structureB. tertiary structureC. secondary structureD. helix structure
Answer» Correct Answer - B

Discussion

1379.	The isoelectric point of a protein is :A. the pHat which the protein in molecule has no charges on its surfaceB. the pH at which the protien solution has an equal number of positive and nagtive chargeC. the electric charge under isothermal conditionD. non of these
Answer» Correct Answer - b

Discussion

1380.	The linear arrangement of amino acid units in protien called:A. primary structureB. secondary structureC. tertiary strctureD. quarternarym structure
Answer» Correct Answer - a

Discussion

1381.	Assertion. Amino acids are monomers of nucleic acids. Reason. Protien amino acids have an unlimited variety.A. If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.C. If Assertion is true but the Reason is false.D. If both Assertion and Reason are false.
Answer» Correct Answer - D

Discussion

1382.	The major fibrous protien of conncetive tissue isA. myosinB. myoglobinC. collageD. keratin
Answer» Correct Answer - C

Discussion

1383.	The protien of red muscles to store oxygen isA. haemoglobinB. myoglobinC. myosinD. actin
Answer» Correct Answer - B

Discussion

1384.	the concentration of Na,K, Ca in a cell in decreasing order isA. K-Na-CaB. K-Ca-NaC. Na-K-CaD. Ca-K-Na
Answer» Correct Answer - A

Discussion

1385.	all the following statement are correct exceptA. Mitochodira are rich in maganese.B. Molybdenum in necessary for the fixation of nitrogen catalyzed by the anzyme nitrogenase .C. Magneismium is essential for a large number of en-zymes , particulaly those utizing ATP.D. Calsium and magnesium have on effect on the excitability of nerves and muscles .
Answer» Correct Answer - D

Discussion

1386.	The most abundant compound in living cell isA. CB. HC. OD. N
Answer» Correct Answer - C

Discussion

1387.	which element is / are found in cytochromes ?A. `Fe^(+ +) and Cu^(++)`B. `Fe^(+++) and Mg^(++)`C. `Mg^(+ +)`D. `CU ^(++)`
Answer» Correct Answer - A

Discussion

1388.	Which two of the following compounds are reduced to the chiral alditol by `NaBH_(4)`? ?A. A & BB. B & CC. C & DD. A & C
Answer» Correct Answer - B

Discussion

1389.	The number of chiral carbon in one molecule of `alpha`-D glucose is _______ .
Answer» Correct Answer - 5

Discussion

1390.	Assertion : Reduction of glucose with `NaBH_(4)` forms two products differing in configuration. Reason : A chiral carbon is formed due to reduction of keto group at `C_(2)`.A. If both assertion and reason are correct and reason is correct explanation for assertion.B. If both assertion and reason are correct but reason is not correct explanation for assertion.C. If assertion is correct but reason is incorrect.D. If assertion and reason are both incorrect.
Answer» Correct Answer - A Reason is the correct explanation for assertion.

Discussion

1391.	Select the correct statement.A. Elastomers have the weakest intermolecular forces.B. Buna-N is an elastomer with crosslinks.C. Some fibres have crystalline nature.D. Thermoplastic polymers have stronger intermolecular force than fibres.
Answer» Correct Answer - a,b,c

Discussion

1392.

Distinguish between monosaccharides and disaccharides.

Answer»

Monosaccharides	Disaccharides
1. They are composed of 3-6 carbon atoms.	They are composed of two monosaccharide units covalently linked to each other.
2. They cannot be hydrolyzed into smaller units.	They can be hydrolysed into monosaccharides.
3. Glucose, Fructose	Sucrose and Lactose

Discussion

1393.	Selet correct statement.A. Saccharine is artificial sweetener.B. Soaps are Na or K salt higher carboxylic acid.C. Tetercycline is antibiotic.D. Cetyltrimethyl ammonium bromide is anionic detergent.
Answer» Correct Answer - a,b,c

Discussion

1394.	Observe these compounds and give answer of following question : What is the relationship betweenC-5-epimer of D-tolose and C-2-epimer of D-talose and C-2-epimer ofC-3-epimer of F-mannoseA. enantiomerB. diastereic isomerC. identialD. anomer
Answer» Correct Answer - a

Discussion

1395.	In lab various tests were carried out by student. Following observations made by him is /are correct :A. When ethanol was treated with `I_(2)//NaOH` yellow colour appeared.B. When ethanol was treated with `K_(2)Cr_(2)O_(7)` in acidic medium colour change from orange to green was observed.C. When benzaldehyde was treated with Fehling solution red colour appeared.D. When phenol is treated with `NaHCo_(3)` effervescence.
Answer» Correct Answer - a,b

Discussion

1396.	Observe these compounds and give answer of following question : Identify the epimers from the following :A. D(+) allose and D(+) mannoseB. D(-)idose and D(-) guloseC. D(+) talose and D(+) altroseD. D(+) glucose and D(+)talose
Answer» Correct Answer - b

Discussion

1397.	Observe these compounds and give answer of following question : In the given aldise which can form same osazone ?A. D-riboseB. D-arabinoseC. D-iodoseD. D-galactose
Answer» Correct Answer - c,d In osazone formation `C_(1)" and "C_(2)` both carbons are involved , rest of the skeleton is identical.

Discussion

1398.	Observe these compounds and give answer of following question : In the given aldise which can form same osazone ?A. D-glucoseB. D-guloseC. D-mannoseD. D-glactose
Answer» Correct Answer - a All C-2 epimers give same osazone

Discussion

1399.	Which one of the following compounds will form an osazone derivative ?A. `CH_(3)CH_(2)COCH_(2)OH`B. `CH_(3)COCH_(2)CH_(2)OH`C. `CH_(3)CH_(2)CHOHCH_(2)OH`D. `CH_(3)CH_(2)COCH_(2)OCH_(3)`
Answer» Correct Answer - A Keto hydroxy show osazone formation

Discussion

1400.	D-glucose `overset(HO^(-))hArr A+B`, A and B are :A. D-mannose & D-mannitolB. D-mannose & D-FructoseC. D-Allose & D-AltroseD. D-Glucose and D-Idose
Answer» Correct Answer - B Lobry de Bruyn/Alberda van Ekenstein transformation.

Discussion

Explore topic-wise InterviewSolutions in .

Reducing sugar is

Raffinose on hydrolysis gives :(a) glucose + glucose + galactose (b) glucose + fructose + galactose (c) glucose + galactose + galactose (d) fructose + galactose + galactose

The function of enzymes in the living system is toA. transport oxygenB. provide immunityC. catalyse biochemical reactionsD. provide energy

Raffinose isA. trisaccharideB. disaccharideC. monosaccharideD. polysaccharide

Glucose exists in how many forms in equilibrium?

The pH of human blood isA. `~~2`B. `~~10`C. `~~7.3`D. `~~5.5`

The principal buffer present in human blood isA. Acetiacid / sodium acetateB. `H_(2)CO_(3)//HCO_(3)`C. `NaH_(2)PO_(4)//Na_(2)HPO_(4)`D. `Na_(2)SO_(4)//H_(2)SO_(4)`

Raffinose isA. trisaccharideB. monosaccharideC. disaccharideD. none

What is maximum number of monosaccharide unit present in oligosaccharides?

Lipids areA. nucleic acids occuring in plantsB. proteins occuring in animalsC. carbohydrates occuring in plantsD. fats of natural origin

DNA has deoxyribose, a base and the third component is

The two forms of `D-glucopyranose obtained from solution of D-glucose are known as:A. isomersB. anomersC. epimersD. enantiomer

The `RNA` which takes part in the synthesis of proteins is:A. m-RNAB. r-RNAC. t-RNAD. all the above

In biological systems, the RNA molecules direct the synthesis of specific proteins which are characteristic of each kind of organism. This process is known asA. transcirptionB. mutationC. replicationD. translation

DNA has deoxyribose, a base and the third component isA. phosphoric acidB. riboseC. adenineD. thymine

Which one of the following statements is correct with reference to enzymes? (A) Apoenzyme = Holoenzyme + coenzyme (B) Holoenzyme = Apoenzyme + Coenzyme(C) Coenzyme = Apoenzyme + Holoenzyme (D) Holoenzyme = Coenzyme + Co-factor

Mention the polymer of fructose.

Why cannot cellulose hold l2 molecules?

Name the chemical present in the exoskeleton of arthropods.

Give examples for heteropolysaccharide.

Which one of the following carbohydrates is a heteropolysaccharide?(A) Cellulose(B) Starch (C) Glycogen (D) Hyaluronic acid

Differentiate between homopolysaccharide and heteropolysaccharide?

What are the monomeric units of proteins?

Where does histone occur?

Some enzyme when secreated are inactive state. Such enzyme in inactive state are called.A. isonzymesB. conezymesC. zymogensD. apenzyme

Mutases and epimerases areA. isomerasesB. hydrolasesC. lyasesD. ligases

The enzymatic function of a protein is due toA. Primary structureB. tertiary structureC. secondary structureD. helix structure

The isoelectric point of a protein is :A. the pHat which the protein in molecule has no charges on its surfaceB. the pH at which the protien solution has an equal number of positive and nagtive chargeC. the electric charge under isothermal conditionD. non of these

The linear arrangement of amino acid units in protien called:A. primary structureB. secondary structureC. tertiary strctureD. quarternarym structure

The major fibrous protien of conncetive tissue isA. myosinB. myoglobinC. collageD. keratin

The protien of red muscles to store oxygen isA. haemoglobinB. myoglobinC. myosinD. actin

the concentration of Na,K, Ca in a cell in decreasing order isA. K-Na-CaB. K-Ca-NaC. Na-K-CaD. Ca-K-Na

The most abundant compound in living cell isA. CB. HC. OD. N

which element is / are found in cytochromes ?A. `Fe^(+ +) and Cu^(++)`B. `Fe^(+++) and Mg^(++)`C. `Mg^(+ +)`D. `CU ^(++)`

Which two of the following compounds are reduced to the chiral alditol by `NaBH_(4)`? ?A. A & BB. B & CC. C & DD. A & C

The number of chiral carbon in one molecule of `alpha`-D glucose is _______ .

Select the correct statement.A. Elastomers have the weakest intermolecular forces.B. Buna-N is an elastomer with crosslinks.C. Some fibres have crystalline nature.D. Thermoplastic polymers have stronger intermolecular force than fibres.

Distinguish between monosaccharides and disaccharides.

Selet correct statement.A. Saccharine is artificial sweetener.B. Soaps are Na or K salt higher carboxylic acid.C. Tetercycline is antibiotic.D. Cetyltrimethyl ammonium bromide is anionic detergent.

Observe these compounds and give answer of following question : What is the relationship betweenC-5-epimer of D-tolose and C-2-epimer of D-talose and C-2-epimer ofC-3-epimer of F-mannoseA. enantiomerB. diastereic isomerC. identialD. anomer

Observe these compounds and give answer of following question : Identify the epimers from the following :A. D(+) allose and D(+) mannoseB. D(-)idose and D(-) guloseC. D(+) talose and D(+) altroseD. D(+) glucose and D(+)talose

Observe these compounds and give answer of following question : In the given aldise which can form same osazone ?A. D-riboseB. D-arabinoseC. D-iodoseD. D-galactose

Observe these compounds and give answer of following question : In the given aldise which can form same osazone ?A. D-glucoseB. D-guloseC. D-mannoseD. D-glactose

Which one of the following compounds will form an osazone derivative ?A. `CH_(3)CH_(2)COCH_(2)OH`B. `CH_(3)COCH_(2)CH_(2)OH`C. `CH_(3)CH_(2)CHOHCH_(2)OH`D. `CH_(3)CH_(2)COCH_(2)OCH_(3)`

D-glucose `overset(HO^(-))hArr A+B`, A and B are :A. D-mannose & D-mannitolB. D-mannose & D-FructoseC. D-Allose & D-AltroseD. D-Glucose and D-Idose

The pH of human blood isA. `2`B. `10`C. `7.3`D. `5.5`