3593 + Interview Questions in BIOMOLECULES IN GENERAL AWARENESS Page 58 InterviewSolution

2851.	Which of the cell organelles are devoid of deoxy ribonucleic acidA. Mitochondria and nucleusB. Chloroplast and mitochondriaC. Nucleus and chloroplastD. Lysosome and dictyosome
Answer» Correct Answer - D

Discussion

2852.	Similarity in DNA and RNA-A. Both are polymers of nucleotidesB. Both have similar pyrimidinesC. Both have similar sugarD. Both are genetic material in man
Answer» Correct Answer - A

Discussion

2853.	What indicated 'A' in give figure A. Peptide bondB. Glycosidic bondC. Disulfide bondD. Hydrophobic bond
Answer» Correct Answer - A

Discussion

2854.	The similarity between DNA and RNA is that both areA. Double strandedB. Having similar sugarsC. Polymers of nucleotidesD. Having similar pyrimidines
Answer» Correct Answer - C

Discussion

2855.	The similarity between DNA and RNA is that both areA. are double-strandedB. have similar sugarsC. are polymers of nucleotidesD. have similar pyrimidines
Answer» Correct Answer - C

Discussion

2856.	Non-proteinaceous part of enzyme isA. CofactorB. CoenzymeC. Prosthetic groupD. All of the above
Answer» Correct Answer - D

Discussion

2857.	Enzymatic reactions are given Column I and enzymes in Column II `\|{:(,"Column I",,"Column II"),((A),"Maltose" rarr. "Glucose",(i),"Zymase"),((B),"Sucrose" rarr. "Glucose + Fructose",(ii),"Pepsin"),((C ),"Glucose" rarr. "Ethyl alcohol" + CO_(2),(iii),"Maltase"),((D),"Starch" rarr. "Maltose",(iv),"Invertase"),((E ),"Proteins" rarr. "Amino acids",(v),"Diastase"):}\|` Choose the correct matching of enzymatic reaction and enzyme that catalyses the reaction from the codes given below :A. (A)-(ii), (B)-(iv), (C )-(v), (D)-(iii), (E )-(i)B. (A)-(iii), (B)-(iv), (C )-(i), (D)-(v), (E )-(ii)C. (A)-(v), (B)-(iv), (C )-(ii), (D)-(i), (E )-(iii)D. (A)-(v), (B)-(iii), (C )-(iv), (D)-(ii), (E )-(i)
Answer» Correct Answer - b

Discussion

2858.	Which of the following is an example of a non reducing sugar?A. maltoseB. lactoseC. cellobioseD. cane sugar
Answer» Correct Answer - D

Discussion

2859.	Which of the following is leavorotatory?A. glucoseB. SucroseC. fructoseD. Lactose
Answer» Correct Answer - C

Discussion

2860.	Most of the enzymes when secreted are in inactive form (called proenzymes or zymogens) otherwise they will mainly destroyA. cell proteinsB. cell DNAC. cell mitochondrianeD. cell wall and membrane
Answer» Correct Answer - A

Discussion

2861.	Which one of the following statements is wrong ?A. Cellulose is a polysaccharideB. Uracil is a pyrimidineC. Glycine is a sulphur containing amino acidD. Sucrose is a disaccharide
Answer» Correct Answer - C

Discussion

2862.	The amino acid trytophan is the precursor for the synthesis ofA. Thyroxine and TriiodothyronineB. Estrogen and ProgesteroneC. Cortisol and CortisoneD. Melatonin and Serotonin
Answer» Correct Answer - D

Discussion

2863.	An unsaturated fatty acid on ozonolysis yields one aldehyde `H_(3)C(CH_(2))_(7)CHO` and an aldehyde monocarboxylic acid `OHC(CH_(2))_(7)COOH`. Write down the structure and name of the acid.
Answer» An aldehyde function occurs as a result of ozonolysis of a double bond, Moreover, the double-bonded carbon atom must carry a hydrogen. Since two aldehyde are formed, the double bond must be `-HC-=CH-`. Therefore, the structure of the unsaturated acid can be written as: `H_(3)C(CH_(2))_(7)HC=CH(CH_(2))_(7)COOH`. It is oleic acid.

Discussion

2864.	Aqueous solution of glucose on cystalline at 303k producesA. anomersB. epimersC. enantiomersD. polymers
Answer» Correct Answer - A

Discussion

2865.	Which of the following hormones is an amino acid derivative?A. AdrenalineB. VasopressineC. OxytocinD. Testosterone
Answer» Correct Answer - A Adrenaline hormone is an amino acid derivative.

Discussion

2866.	What are Hormones ? Give one example for each. i) Steroid Hormones ii) Polypeptide Hormones iii) Amino Acid derivatives.
Answer» Hormones : Hormones is defined as an organic compound synthesised by the ductless gland of the body and carried by the blood stream to another part of the body for its function. Eg. Testosterone, estrogen. i) Example for steroid hormones : Testosterone , Estrogen ii) Example for polypeptide hormones : Insulin iii) Example for amino acid derivative : Thyroidal hormones thyroxine.

Discussion

2867.	Which of the following are amino acid hormonesA. 1,3B. 1,2C. 2,3D. Only 1
Answer» Correct Answer - B

Discussion

2868.	Iodine test can detect the presence ofA. StarchB. CelluloseC. Both (1) & (2)D. Chitin
Answer» Correct Answer - A

Discussion

2869.	Iodine test is used to detectA. fatsB. malariaC. typhoidD. carbohydrates
Answer» Correct Answer - D

Discussion

2870.	In sea urchin DNA, which is double stranded, 17% of the bases were show to be cytosine. The percentages of the other three bases expected to be present in this DNA areA. G 8.5%, A 50%, T 24.5%B. G 34%, A 24.5%, T24.5%C. G 17%, A 16.5%, T 32.5%D. G 17%, A 33%, T 33%
Answer» Correct Answer - D

Discussion

2871.	Which one of the following statements is correct with reference to enzymesA. Holoenzyme=Apoenzyme+CoenzymeB. Coenzyme=Apoenzyme+HoloenzymeC. Holoenzyme=Coenzyme+ Co-factorD. Apoenzyme=Coenzyme+Co-factor+Coenzyme
Answer» Correct Answer - B

Discussion

2872.	Serium differs from blood inA. Lacking clotting factorsB. Lacking antibodiesC. Lacking globulinsD. Lacking albumins
Answer» Correct Answer - A

Discussion

2873.	Name the ion responsible for masking active sites for myosin for cross-bridge activity during muscle contractionA. SodiumB. PotassiumC. CalciumD. Manesium
Answer» Correct Answer - C

Discussion

2874.	Define carbohydrates. Give example.
Answer» 1. Carbohydrates are defined as polyhydroxy aldehydes (or) ketoses with a general formula Cn(H₂O)n. 2. They are considered as hydrates of carbon containing hydrogen and oxygen in the same ratio as in water. 3. Example: Glucose, sucrose, cellulose.

2874.

Define carbohydrates. Give example.

Answer»

1. Carbohydrates are defined as polyhydroxy aldehydes (or) ketoses with a general formula Cn(H₂O)n.

2. They are considered as hydrates of carbon containing hydrogen and oxygen in the same ratio as in water.

3. Example: Glucose, sucrose, cellulose.

Discussion

2875.	What is the general chemical name of carbohydrates?(a) Poly hydroxy aldehyde or ketones (b) Poly hydroxy esters(c) Poly amino acids (d) Poly carboxylic esters.
Answer» (a) Poly hydroxy aldehyde or ketones

Discussion

2876.	Assertlon(A): Almost all carbohydrates are optically active.Reason (R): All carbohydrates have one or more chiral carbon atoms.(a) Both A and R are correct and R is the correct explanation of A.(b) Both A and R are correct but R is not the correct explanation of A. (c) A is correct but R is wrong. (d) A is wrong but R is correct.
Answer» (a) Both A and R are correct and R is the correct explanation of A

Discussion

2877.	Which of the following compounds are optically active? (a) Glycine (b) Carbohydrates(c) Ethanol (d) Meso tartaric acid
Answer» (b) Carbohydrates

Discussion

2878.	Fill in the blanks.1. Chemically, carbohydrates are defined as …………. or …………. with a general formula.2. …………. are synthesised by green leaves during photo synthesis. 3. Almost all …………. are optically active as they have one or more chiral carbon. 4. …………. are carbohydrates that cannot be hydrolysed further and are also called simple sugars.5. Erythrose is an example of …………. 6. Glyceraldehyde is an example of …………. in monosaccharides. 7. Glucose in human blood about …………. and it also known as …………. 8. Ribulose is an example of …………. 9. Glucose solution is optically active and it rotates the plane polarised light in …………. direction and so it called 10. Glucose when oxidised with con.HNO3 gives ………….
Answer» 1. polyhydroxy aldehydes, ketoses, C(H₂O) 2. Carbohydrates 3. carbohydrates 4. Monosaccharides 5. monosaccharide 6. aldotriose 7. 100 mg/dI, blood sugar 8. ketopentose 9. clockwise, dextrose 10. glucaric acid (or) saccharic acid

2878.

Fill in the blanks.1. Chemically, carbohydrates are defined as …………. or …………. with a general formula.2. …………. are synthesised by green leaves during photo synthesis. 3. Almost all …………. are optically active as they have one or more chiral carbon. 4. …………. are carbohydrates that cannot be hydrolysed further and are also called simple sugars.5. Erythrose is an example of …………. 6. Glyceraldehyde is an example of …………. in monosaccharides. 7. Glucose in human blood about …………. and it also known as …………. 8. Ribulose is an example of …………. 9. Glucose solution is optically active and it rotates the plane polarised light in …………. direction and so it called 10. Glucose when oxidised with con.HNO3 gives ………….

Answer»

1. polyhydroxy aldehydes, ketoses, C(H₂O)

2. Carbohydrates

3. carbohydrates

4. Monosaccharides

5. monosaccharide

6. aldotriose

7. 100 mg/dI, blood sugar

8. ketopentose

9. clockwise, dextrose

10. glucaric acid (or) saccharic acid

Discussion

2879.	Which process is utilized in the synthesis of carbohydrates in green plants?(a) Oxidation (b) Redox reaction (c) Photosynthesis (d) Reduction
Answer» (c) Photosynthesis

Discussion

2880.	Before a carbohydrate is utilized as an energy source, it gets first converted intoA. disaccharideB. oligosaccharideC. tirose sugarsD. monosaccharide
Answer» Correct Answer - D

Discussion

2881.	How many atoms are there in pyaranose ring ?A. 5B. 3C. 6D. 7
Answer» Correct Answer - C

Discussion

2882.	Protein is (A) micromolecule (B) macromolecule (C) soluble (D) specific
Answer» The correct answer is (B) macromolecule

Discussion

2883.	Which one is a non-reducing commercial sugar ?A. GlucoseB. FructoseC. SucroseD. Lactose
Answer» Correct Answer - C

Discussion

2884.	Which of the following is incorrect about isoelectric point of amino acid?A. At this point amino acid is present in the form of zwitter ionB. At this point amino acid is electrically neutralC. lf pH-`gt` isoelectric point amino acid will move toward anodeD. lf pH-`gt` isoelectric point amino acid will move toward cathode
Answer» Correct Answer - D

Discussion

2885.	Which of the following is condensation polymer ?A. PolystyreneB. PVCC. PolyesterD. Teflon
Answer» Correct Answer - C `nHO-R-OG+n HO- overset(overset(O)(\|\|))(C)-R-overset(overset(O)(\|\|))(C)-OH rarr H-[underset("polyester")(-O-R-overset(overset(O)(\|\|))(C)-R-overset(overset(O)(\|\|))(C))]_(n)-OH+(n-1)H_(2)O`.

Discussion

2886.	A condensation polymer among the following polymer isA. `PVC`B. TeflonC. DecronD. Polystyrene
Answer» Correct Answer - C The polymer formed by the condensation polymerisation is known as condensation polymer. Decron (Tery1ene) is a condensation of terephthalic acid and ethylene glycol.

Discussion

2887.	Glycerol is added to soap. It function:A. as a fillerB. to increase leatheringC. to prevent rapid dryingD. to make soap granules
Answer» Correct Answer - C Glycerol being hygrosopic prevents rapid drying of soaps.

Discussion

2888.	Compounds that act as catalysts in biochemical reactions are called enzymes. They usually belong to the class ofA. lipidsB. carbohydratesC. proteinsD. nucleic acids
Answer» Correct Answer - C Almost all enzymes are globular proteins up of optically acitve `A A` residues. The function of enzymes in a living system is to catalyse biochemical reaction. Certain `RNA` molecules, ribosezymes, can also act as enzymes.

Discussion

2889.	Nylon-6,6 is aA. Natural polymerB. Condensation polymerC. Addition polymerD. Substitution polymer
Answer» Correct Answer - B Nylon-66 is manufactured by the condensation polymerization of adipic acid and hexamethy1enediamine with the lost of `H_(2) O` as steam.

Discussion

2890.	The following compound is used as A. an anti-inflammatory compoundB. analgesicC. hypnoticD. antiseptic
Answer» Correct Answer - B Analgesic

Discussion

2891.	The alternation of the conformation of a protein form that formed in its natural state with consequent loss of its biochemical property such as enzyme activity is known as itsA. renaturationB. deaminationC. decompositionD. denaturation
Answer» Correct Answer - D Irreversible precipitation of proteins called denaturation, is casued by heat, strong acid of bases of various other agents, Coagulation of egg white by heat, for example, is denaturation of the protein egg albumin. The extreme ease with which many proteins are denatured made their study difficult. Denaturation causes a fundamental change in a protein, in particular destroying any physiological activity. The reverse of denaturation is called renaturation

Discussion

2892.	Neoprene, a synthetic rubber contains which of the following element besides `C` and `H`A. `N`B. `O`C. `CI`D. `F`
Answer» Correct Answer - C `n(CH_(2)=underset("Chloroprene")underset(Cl)underset(\|)(C)-CH=CH_(2))to(CH_(2)-underset("Neoprene")underset(Cl)underset(\|)(C)=CH-CH_(2))_(n)`

Discussion

2893.	Structurally biodegradalbe detergent should containA. Normal alkyl chainB. Branched alkyl chainC. phenyl side chainD. cyclohexyl side chain
Answer» Correct Answer - C Linear alkylbenzene sulphonates `(LAS)` carrying phenyl chains at secondary positions are biodegradable.

Discussion

2894.	Statement-1 : Bakelite is copolymer Statement-2 : Bakelite is a thermosetting material.A. STATEMENT-1 is true, STATEMENT-2 is true and STATEMENT-2 is correct explanation for STATEMENT-1B. STATEMENT-1 is true, STATEMENT-2 is true and STATEMENT-2 is not correct explanation for STATEMENT-1C. STATEMENT-1 is true, STATEMENT-2 is falseD. STATEMENT-1 is false, STATEMENT-2 is true
Answer» Correct Answer - B

Discussion

2895.	Which of the following is a biodegradalbe polymer?A. PolytheneB. `PVC`C. BakeliteD. `PHBV`
Answer» Correct Answer - D `PHBV` undergoes degradation in the body as well as in the environment.

Discussion

2896.	Which of the following is a chain-growth polymer?A. StarchB. Nucleic acidC. PolystyreneD. Protein
Answer» Correct Answer - C Polystyrene, Teflon and `PVC` etc. are chain growth polymers.

Discussion

2897.	Statement-1 : Polybutadiene is an example of chain growth polymer. Statement-2 : In chain growth polymers, the reactive particles may be free radicals or ions (cations or anions) to which monomers get added by a chain reaction.A. STATEMENT-1 is true, STATEMENT-2 is true and STATEMENT-2 is correct explanation for STATEMENT-1B. STATEMENT-1 is true, STATEMENT-2 is true and STATEMENT-2 is not correct explanation for STATEMENT-1C. STATEMENT-1 is true, STATEMENT-2 is falseD. STATEMENT-1 is false, STATEMENT-2 is true
Answer» Correct Answer - A

Discussion

2898.	Which of the following attractive forces are responsible for the tertiary structure of proteins? 1. (i) ionic bonds (ii) hydrogen bonds (iii) van der Waals forces (iv) disulphide linkagesA. (ii) onlyB. (ii) and (iv)C. (i),(ii),(iii) and (iv)D. (ii),(iii), and (iv)
Answer» Correct Answer - C The unique three-dimensional shape of a protein is the result of the intermolecular forces of attraction that cause bending and coliling in the helical coil. These forces are a function of the nature of the `A A` side chains within the molecule. Globular proteins have their nonpolar `R` group pointing to the interior (the hydrophobic or non-aqueous region) and their polar side chains projecting toward the aqueous environment, somewhat like a micelle. They are some what water soluble. Fibrous proteins are insoluble in water. Their polypeptide chains are held together by interchain `H` - bonds The following are the attractive forces responsible for the tertiary structure: (i) Inoic bonding between `COO^(-)` and `overset(+)NH_(3)` at different sites (ii) `H -` bonding mainly between side-chain `NH_(2)` and `COOH`, aslo involving `OH`, (e.g., of serine) and `N - H` of tryptophane Weakly hydrophobic van der waals attractive forces engendered by side-chain `R` groups (iv) Disulphide cross linkage between loops of the polypetides chain. The same kind of attractive and prepulsive forces responsible for the tertiary structure operate to held together and stablized the subunits of the quaternary structure.

Discussion

2899.	What makes hair, wool, and silk insoluble in water?
Answer» Fibrous structure i.e. Polypeptide chains run parallel and are held together by hydrogen bonds

Discussion

2900.	Mark the incorrect statement about `ATP`.A. It is a nucleotide.B. It contains the purine adenine.C. The enzyme-catalysed hydrolysis of `ATP` to `ADP` and `AMP` is accompanied by absorption of energy.D. Energy is stored in the cell in the form of `ATP`.
Answer» Correct Answer - C

Discussion

Explore topic-wise InterviewSolutions in .

Which of the cell organelles are devoid of deoxy ribonucleic acidA. Mitochondria and nucleusB. Chloroplast and mitochondriaC. Nucleus and chloroplastD. Lysosome and dictyosome

Similarity in DNA and RNA-A. Both are polymers of nucleotidesB. Both have similar pyrimidinesC. Both have similar sugarD. Both are genetic material in man

What indicated 'A' in give figure A. Peptide bondB. Glycosidic bondC. Disulfide bondD. Hydrophobic bond

The similarity between DNA and RNA is that both areA. Double strandedB. Having similar sugarsC. Polymers of nucleotidesD. Having similar pyrimidines

The similarity between DNA and RNA is that both areA. are double-strandedB. have similar sugarsC. are polymers of nucleotidesD. have similar pyrimidines

Non-proteinaceous part of enzyme isA. CofactorB. CoenzymeC. Prosthetic groupD. All of the above

Which of the following is an example of a non reducing sugar?A. maltoseB. lactoseC. cellobioseD. cane sugar

Which of the following is leavorotatory?A. glucoseB. SucroseC. fructoseD. Lactose

Most of the enzymes when secreted are in inactive form (called proenzymes or zymogens) otherwise they will mainly destroyA. cell proteinsB. cell DNAC. cell mitochondrianeD. cell wall and membrane

Which one of the following statements is wrong ?A. Cellulose is a polysaccharideB. Uracil is a pyrimidineC. Glycine is a sulphur containing amino acidD. Sucrose is a disaccharide

The amino acid trytophan is the precursor for the synthesis ofA. Thyroxine and TriiodothyronineB. Estrogen and ProgesteroneC. Cortisol and CortisoneD. Melatonin and Serotonin

An unsaturated fatty acid on ozonolysis yields one aldehyde `H_(3)C(CH_(2))_(7)CHO` and an aldehyde monocarboxylic acid `OHC(CH_(2))_(7)COOH`. Write down the structure and name of the acid.

Aqueous solution of glucose on cystalline at 303k producesA. anomersB. epimersC. enantiomersD. polymers

Which of the following hormones is an amino acid derivative?A. AdrenalineB. VasopressineC. OxytocinD. Testosterone

What are Hormones ? Give one example for each. i) Steroid Hormones ii) Polypeptide Hormones iii) Amino Acid derivatives.

Which of the following are amino acid hormonesA. 1,3B. 1,2C. 2,3D. Only 1

Iodine test can detect the presence ofA. StarchB. CelluloseC. Both (1) & (2)D. Chitin

Iodine test is used to detectA. fatsB. malariaC. typhoidD. carbohydrates

In sea urchin DNA, which is double stranded, 17% of the bases were show to be cytosine. The percentages of the other three bases expected to be present in this DNA areA. G 8.5%, A 50%, T 24.5%B. G 34%, A 24.5%, T24.5%C. G 17%, A 16.5%, T 32.5%D. G 17%, A 33%, T 33%

Which one of the following statements is correct with reference to enzymesA. Holoenzyme=Apoenzyme+CoenzymeB. Coenzyme=Apoenzyme+HoloenzymeC. Holoenzyme=Coenzyme+ Co-factorD. Apoenzyme=Coenzyme+Co-factor+Coenzyme

Serium differs from blood inA. Lacking clotting factorsB. Lacking antibodiesC. Lacking globulinsD. Lacking albumins

Name the ion responsible for masking active sites for myosin for cross-bridge activity during muscle contractionA. SodiumB. PotassiumC. CalciumD. Manesium

Define carbohydrates. Give example.

What is the general chemical name of carbohydrates?(a) Poly hydroxy aldehyde or ketones (b) Poly hydroxy esters(c) Poly amino acids (d) Poly carboxylic esters.

Which of the following compounds are optically active? (a) Glycine (b) Carbohydrates(c) Ethanol (d) Meso tartaric acid

Which process is utilized in the synthesis of carbohydrates in green plants?(a) Oxidation (b) Redox reaction (c) Photosynthesis (d) Reduction

Before a carbohydrate is utilized as an energy source, it gets first converted intoA. disaccharideB. oligosaccharideC. tirose sugarsD. monosaccharide

How many atoms are there in pyaranose ring ?A. 5B. 3C. 6D. 7

Protein is (A) micromolecule (B) macromolecule (C) soluble (D) specific

Which one is a non-reducing commercial sugar ?A. GlucoseB. FructoseC. SucroseD. Lactose

Which of the following is condensation polymer ?A. PolystyreneB. PVCC. PolyesterD. Teflon

A condensation polymer among the following polymer isA. `PVC`B. TeflonC. DecronD. Polystyrene

Glycerol is added to soap. It function:A. as a fillerB. to increase leatheringC. to prevent rapid dryingD. to make soap granules

Compounds that act as catalysts in biochemical reactions are called enzymes. They usually belong to the class ofA. lipidsB. carbohydratesC. proteinsD. nucleic acids

Nylon-6,6 is aA. Natural polymerB. Condensation polymerC. Addition polymerD. Substitution polymer

The following compound is used as A. an anti-inflammatory compoundB. analgesicC. hypnoticD. antiseptic

The alternation of the conformation of a protein form that formed in its natural state with consequent loss of its biochemical property such as enzyme activity is known as itsA. renaturationB. deaminationC. decompositionD. denaturation

Neoprene, a synthetic rubber contains which of the following element besides `C` and `H`A. `N`B. `O`C. `CI`D. `F`

Structurally biodegradalbe detergent should containA. Normal alkyl chainB. Branched alkyl chainC. phenyl side chainD. cyclohexyl side chain

Which of the following is a biodegradalbe polymer?A. PolytheneB. `PVC`C. BakeliteD. `PHBV`

Which of the following is a chain-growth polymer?A. StarchB. Nucleic acidC. PolystyreneD. Protein

Which of the following attractive forces are responsible for the tertiary structure of proteins? 1. (i) ionic bonds (ii) hydrogen bonds (iii) van der Waals forces (iv) disulphide linkagesA. (ii) onlyB. (ii) and (iv)C. (i),(ii),(iii) and (iv)D. (ii),(iii), and (iv)

What makes hair, wool, and silk insoluble in water?

Mark the incorrect statement about `ATP`.A. It is a nucleotide.B. It contains the purine adenine.C. The enzyme-catalysed hydrolysis of `ATP` to `ADP` and `AMP` is accompanied by absorption of energy.D. Energy is stored in the cell in the form of `ATP`.