InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The total number of basic groups in the following form of lysine is : . |
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Answer» Correct Answer - B The ionic groups in lysine are `-NH_(2)` and `CO O^(-)` i.e., 2. |
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| 2. |
The total number of basic groups in the following form of lysine is |
| Answer» Correct Answer - 2 | |
| 3. |
Dihydroxyacetone-3 phosphate and glyceraldehyde-3-phosphate are interconvertible. The enzyme responsible for this interconversion belongs to the cateogry ofA. isomerasesB. ligasesC. lyasesD. hydrolases. |
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Answer» Correct Answer - A Isomerases catalyse the change of a substrate into a related isomeric form by rearrangement of molecules. `"Dihydroxyacetone-3-phosphate" underset(underset("Glyceraldehyde-3-phosphate")("phosphate isomerase"))overset("Triose")hArr` |
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| 4. |
Which of the following enzyme is a hydrolase ?A. AmylaseB. Histidine decarboxylaseC. Pyruvate carboxylaseD. Both (2) & (3) |
| Answer» Correct Answer - A | |
| 5. |
Which one is diaminodiacrboxlic amino acidA. CystineB. LysineC. CysteineD. Aspartic acid |
| Answer» Correct Answer - B | |
| 6. |
Lipids that insulate the nerve fibre areA. LecithinB. CholesterolC. SuberinD. Glycolipids |
| Answer» Correct Answer - D | |
| 7. |
Match column I with column II and select the correct option from the given codes. `{:(" Column I",," Column II"),("(Category)",,"(Secondary metaboliteis)"),(A."""Pigments ",,(i)"Concanavalin A"),(B."" "Terpenoides",,(ii)"Monoterpenes, diterpenes"),(C."" "Alkalods",,(iii)"Morphine, codeine"),(D.""" Lectins",,(iv) "Carotenoids, anthocyanins"):}`A. `A-(iv), B-(ii), C-(iii), D-(i)`B. `A-(iv), B-(iii), C-(ii), D-(i)`C. `A-(iv), B-(i), C-(iii), D-(ii)`D. `A-(i), B-(iii), C-(ii), D-(iv)` |
| Answer» Correct Answer - A | |
| 8. |
A secondary metabolite that acts as a toxin isA. CarotenoidsB. CurcuminC. AbrinD. Monoterpenes |
| Answer» Correct Answer - C | |
| 9. |
The most abundant molecule in cell isA. WaterB. CarbohydratesC. LipidD. Protein |
| Answer» Correct Answer - A | |
| 10. |
Lecithin is a ?A. carbohydratesB. hormonesC. vitaminsD. phospholipids |
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Answer» Correct Answer - D Lecithin is an example of phosphorous |
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| 11. |
Which of the following is not a secondary metabolite of plant cell ?A. RubberB. ChlorophyllC. Essential oilD. Tannins |
| Answer» Correct Answer - B | |
| 12. |
Which of the following is the diagrammatic representation of phospholipid lecithin ?A. `{:(" "O),(" "||),(CH_(2)-O-C-R_(1)),(|" "O),(" "||),(CH-O-C-R_(2)),(|" "O),(" "||),(CH_(2)-O-P-O-CH_(2)-CH_(2)-NH_(3)^(+)),(" "|),(" "OH):}`B. `{:(" "O),(" "||),(CH_(2)-O-C-R_(1)),(|" "O),(" "||),(CH-O-C-R_(2)),(|" "O),(" "||),(CH_(2)-O-C-R(3)):}`C. `{:(" "O),(" "||),(CH_(2)-O-C-R_(1)),(|" "O),(" "||),(CH-O-C-R_(2)),(| " "O" "CH_(3)),(" "||" "|),(CH_(2)-O-P-O-CH_(2)-CH_(2)-""^(+)N-CH_(3)),(" "|" "| ),(" "OH " "CH_(3)):}`D. `{:(" "O),(" "||),(" "CH_(2)-O-C-R_(1)),(" "O" "|),(" "||),(R_(2)-C=-O-CH),(" "|),(" "CH_(2)-O-P-OH),(" "|),(" "OH):}` |
| Answer» Correct Answer - C | |
| 13. |
Lecithin is aA. Fatty acidB. Phospholipid with choline attached to phosphate groupC. CholesterolD. fat |
| Answer» Correct Answer - B | |
| 14. |
Which of the following is incorrect regarding the amino acids and their functions ?A. Tyrosine : Converted into epinephrine hormone and used in the synthesis of melanin pigmentB. Glycine : Involved in the formation of hemeC. Tryptophan : Helps in the synthesis of auxin hormoneD. Histidine : Can be converted into histamine by the removal of amino group |
| Answer» Correct Answer - D | |
| 15. |
Which of the following is the diagrammatic representation of phospholipid lecithin ?A. `{:(" "O),(" "||),(CH_(2)-O-C-R_(1)),(|" "O),(" "||),(CH-O-C-R_(2)),(|" "O),(" "||),(CH_(2)-O-P-O-CH_(2)-CH_(2)-NH_(3)^(+)),(" "|),(" "OH):}`B. `{:(" "O),(" "||),(CH_(2)-O-C-R_(1)),(|" "O),(" "||),(CH-O-C-R_(2)),(|" "O),(" "||),(CH_(2)-O-C-R(3)):}`C. `{:(" "O),(" "||),(CH_(2)-O-C-R_(1)),(|" "O),(" "||),(CH-O-C-R_(2)),(| " "O" "CH_(3)),(" "||" "|),(CH_(2)-O-P-O-CH_(2)-CH_(2)-""^(+)N-CH_(3)),(" "|" "| ),(" "OH " "CH_(3)):}`D. `{:(" "O),(" "||),(" "CH_(2)-O-C-R_(1)),(" "O" "|),(" "||),(R_(2)-C=-O-CH),(" "|),(" "CH_(2)-O-P-OH),(" "|),(" "OH):}` |
| Answer» Correct Answer - C | |
| 16. |
Lecithin is aA. Simple lipidB. Derived lipidC. PhiospholipidD. Steroids |
| Answer» Correct Answer - C | |
| 17. |
The essential chemical components of many coenzymes areA. Nucleic acids in a nucleotideB. CarbohydratesC. VitaminsD. Proteins |
| Answer» Correct Answer - C | |
| 18. |
The essential chemical components of many coenzymes areA. proteinsB. nucleic acidsC. carbohydratesD. vitamins |
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Answer» Correct Answer - D Essential chemical components of many coenzymes are vitamins, e.g. coenzyme Nicotinamide Adenine Dinuclectide (NAD) and NADP contain the vitamin niacin Proteins, nucleic acids and carbohydrates are not enzymatic biomolecules. |
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| 19. |
Which ones are not true? (a) Glycerol is a 3-carbon alcohol with 3-OH groups as binding sites. (b) Waxes are esters of long chain alcohols and saturated fatty acids. (c ) The term protein was coined by Mulder. (d) Agar is an indispensable polysaccharides, being a complex polymer of glucose and sulphur containing carbohydrates.A. a and c onlyB. d onlyC. a and d onlyD. a,b and d only |
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Answer» Correct Answer - B (B) Glycerol is a 3-carbon alcohol with 3-OH groups as binding sites. Waxes are ester of long chain alcohols and saturated fatty acids. The term protein was coined by Mulder. |
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| 20. |
Which of the following is a non-narcotic analgesic ?A. MorphineB. CodeineC. HeroinD. aspirin |
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Answer» Correct Answer - D Aspirin is a non-narcotic analgesic. |
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| 21. |
Feedback inhibition of an enzyme is influenced byA. Substrate accumulationB. Structural similarity between substrate and inhibitorC. End productD. any of the above |
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Answer» Correct Answer - C (C) Feedback inhibition of enzyme is due to end product. |
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| 22. |
A medicine which promotes secretion of urine is calledA. DiureticB. AntipyreticC. AnalgesicD. Sedative |
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Answer» Correct Answer - A A medicine which promotes secretion of urine is called diuretic |
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| 23. |
Which of the following statements is/are not true (A) Glycerol is a 3 carbon alcohol with 3 OH groups that (B) Waxes are esters formed between a long chain alcohol and saturated fatty acids (C) The term protein was coined by Gerardus Johannes Mulder (D) Agar is an indispensable polysaccharide and it is a complex polymer of glucose and sulphur-containing carbohydratesA. (A) and (C) onlyB. (A) and (D) onlyC. (A), (B), and (D) onlyD. (D) only |
| Answer» Correct Answer - D | |
| 24. |
Which of the following promotes softening of fruitsA. PolygalacturonaseB. ColchicineC. Polyethylene glycolD. Cellulase |
| Answer» Correct Answer - A | |
| 25. |
Select the incorrect statementA. Amino acids are substituent methanesB. Glycerol is a trihydroxy propaneC. Lysine is a neutral amino acidD. Lecithin is a phospholipid |
| Answer» Correct Answer - C | |
| 26. |
Carbohydrates are commonly found as starch in plant storage organs. Which of the following five properties of starch (A-E) make it useful as a storage material (A) Easily translocated (B) Chemically non-reactive (C) Easily digested by animals (D) Osmotically inactive (E) Synthesized during photosynthesis The useful proeprties ar :A. (A), (C) and (E)B. (A) and (E)C. (B) and (C)D. (B) and (D) |
| Answer» Correct Answer - D | |
| 27. |
The pitch of the B-DNA isA. `36 Å`B. `3.4Å`C. `34 Å`D. `3.6 Å` |
| Answer» Correct Answer - C | |
| 28. |
The primary precursor for the production of cholesterol in our body isA. Acetic acidB. Citric acidC. Ethyl alcoholD. Methanol |
| Answer» Correct Answer - A | |
| 29. |
Cholesterol is a precursor for each of the following exceptA. bile saltsB. vitamin DC. insulinD. steroids. |
| Answer» Correct Answer - C | |
| 30. |
A : Tertiary structure of protein is absoulutely necessary for many biological actitives of proteins. R : In protein, only right handed helices are observed.A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2).C. If Assertion is true statements but Reason is false, then mark (3).D. If both Assertion and Reason are false statements, then mark (4) |
| Answer» Correct Answer - B | |
| 31. |
The alpha helices and beta sheets are the example of which level of protein organizationA. Primary structureB. Secondary structureC. Tertiary structureD. Quaternary structure |
| Answer» Correct Answer - B | |
| 32. |
The alpha helices and beta sheets are the example of which level of protein organizationA. Quaternary structureB. Tertiary structureC. Secondary structureD. Primary structure |
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Answer» Correct Answer - C (C) Alpha helices and beta sheets are the examples of secondary structures of protein. |
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| 33. |
Cholesterol belongs to which of the following groupsA. SteroidsB. Neutral fatsC. WaxesD. Phospholipids |
| Answer» Correct Answer - A | |
| 34. |
Structural lipids of cell membrane areA. Simple lipidB. chromolipidC. PhospholipidD. Steroid |
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Answer» Correct Answer - C (C) Structural lipids of cell membrane are phospholipid. |
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| 35. |
Name three vitamins which are water soluble and three which are soluble in fat. |
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Answer» Water soluble vitamins : Vitamin C, `B_(1)` and `B_(2)`. Fat soluble vitamins : Vitamin A, D and E. |
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| 36. |
Fat soluble vitamins areA. proteinsB. Complex lipidsC. Simple lipidsD. carbohydrates |
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Answer» Correct Answer - C |
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| 37. |
Which of the following pair gives same phenyl osazone ?A. D-glucose, D-fructose and D-galactoseB. D-glucose, D-fructose and D-mannoseC. D-glucose, D-mannose and D-galactoseD. D-fructose, D-mannose and D-galactose |
| Answer» Correct Answer - B | |
| 38. |
Hydrolytic enzyme which acts at low pH isA. proteasesB. `alpha`-amylasesC. hydrolasesD. peroxidases |
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Answer» Correct Answer - C Lysosomes are the reservoirs of acid hydrolases showing optimum activity at pH 5.0 maintained within the lysosome. These include proteases, nucleases, glycosidases, lipase, etc. Among these protease act a very low pH, i.e. 2. |
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| 39. |
The vitamins which is neither soluble in water nor in fat isA. biotinB. phylloquinoneC. thiamineD. ergo calciferol |
| Answer» Correct Answer - A | |
| 40. |
The vitamins which is neither soluble in water nor in fat is |
| Answer» Correct Answer - Biotin | |
| 41. |
The vitamin which is neither soluble in water nor in fats isA. Vit-AB. Vit-HC. Vit-PD. Vit-D |
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Answer» Correct Answer - B |
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| 42. |
Which of the follov.ring are water soluble vitamins 1) vit-B 2) vit-C 3)| vit-E 4) vit-DA. 1,3B. 1,2C. 3,4D. 1,4 |
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Answer» Correct Answer - B |
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| 43. |
Lack of vit-P causesA. beri-beriB. weakness of musclesC. HemorrhageD. Scurvy |
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Answer» Correct Answer - C |
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| 44. |
Vit-`B_1` is known asA. RetinolB. thiamineC. riboflavinD. ascorbic acid |
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Answer» Correct Answer - B |
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| 45. |
proteins are conducted in the body in the form ofA. Amino acidsB. Natural proteinC. EnzymesD. Nucleic acids |
| Answer» Correct Answer - B | |
| 46. |
α-Helix is a secondary structure of proteins formed by twisting of polypeptide chain into right handed screw like structures. Which type of interactions are responsible for making the α-helix structure stable? |
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Answer» In α-helix,a polypeptide chain is stabilised by the formation of hydrogen bonds between —NH— group of amino acids in one turn with the >C= O groups of amino acids belonging to adjacent turn. |
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| 47. |
Find the odd one out and give the reasons.Keram, collagen, glycine, alanine, inulin, instilin. |
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Answer» Inulin, It is a carbohydrates whereas others arc proteins. |
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| 48. |
`alpha-`helix is a secondary structure of proteins formed by twisting of polypeptide chain into right handed screw like structure. Which type of interactions are responsible for making the `alpha`-helix structure stable? |
| Answer» Intermolecular hydrogen bonding is responsible for the interactions present in the `alpha`- heix structure. It is responsible for its stability. | |
| 49. |
(a) What are cofactors ? Give one example. (b) Differentiate between apoenzyme, coenzyme and prosthetic group. |
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Answer» (a) Many enzymes show catalytic activity only in association with certain non-protein substances. Such substances are called cofactors. Example : Simple metal ions, e.g., `Mg^(++)`. (b) Apoenzymes. The enzymes which work only in the presence of cofactors are called apoenzymes. Coenzyme. An organic non-protein cofactor which is easily separable from the apoenzyme is called coenzyme. Prosthetic group. The non-protein organic cofactor that is tightly bound to and non-dissociable from the enzyme is called prosthetic group. |
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| 50. |
What will be the molecular formula of a polypeptide consisting of 10 glycine when the formula of glycine is `C_(2)H_(5)O_(2)N_(5)` N ?A. `C_(6)H_(12)ON_(5)`B. `C_(20)H_(32)O_(11)N_(10)`C. `C_(30)H_(16)O_(6)N_(10)`D. `C_(25)H_(16)O_(6)N_(5)` |
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Answer» Correct Answer - B A polypeptide is formed by the condensation of glycine monomers, i.e., by the eliminetion of one water molecule during the formation of each peptide bond. When `10` glycine `(C_(2)H_(5)O_(2)N)`, molecules participate, `9H_(2)O` molecules are eliminated. Thus resulting polypeptide will prossess the molecular formula `C_(20) H_(32)O_(11)N_(10)`. |
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