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. |
How is the rate of enzyme-catalysed reactions affected by every `10^(@)C` rise in temperature?A. HalfB. DoubleC. Becomes four timesD. Remains unchanged |
| Answer» Correct Answer - B | |
| 2. |
Enzyme catalysing rearrangement of atomic grouping without altering molecular weight or number of atoms isA. ligaseB. hydrolaseC. isomeraseD. oxidoreductase |
| Answer» Correct Answer - C | |
| 3. |
`C_(n)H_(2n)O_(n)` is the formula ofA. fatty acidB. fatC. glycerolD. carbohydrate |
| Answer» Correct Answer - D | |
| 4. |
Given below is the chemical formula of `CH_(3)(CH_(2))_(14)-overset(O)overset(||)(C)-OH`A. palmitin acidB. stearic acidC. glycerolD. galactose |
| Answer» Correct Answer - A | |
| 5. |
Find out the mis-matched pairA. Agar-polymer of glucose and sulphur containing carbohydrates.B. Chitin-polymer of glucosamineC. Peptidoglycan polysaccharide linked to peptidesD. Lipopolysaccharides a complex of lipid and polysaccharide |
| Answer» Correct Answer - A | |
| 6. |
Exoskeletons of arthropods have a complexA. polysaccharide called chitin, which isB. heteropolymerC. homopolymerD. not a polymer |
| Answer» Correct Answer - B | |
| 7. |
During protein, denaturation one of the following is disrupted?A. peptie bond sequence of amino acidsB. secondary and teritary structureC. primary structureD. none of the above |
| Answer» Correct Answer - B | |
| 8. |
mannose isA. disccharideB. aldohexoseC. pentose sugarD. a tetrose |
| Answer» Correct Answer - B | |
| 9. |
A mucopolysaccharide isA. slime, phycocolloid and pectinB. mucin, callose and heparinC. hemicellulose, pectin and mucinD. hyaluronic acid, chondroitin sulphate and keratin |
| Answer» Correct Answer - D | |
| 10. |
An amino acid under certain conditions have both positive and negative charges simultaneously in the same molecule. Such a form of amino acid is calledA. acidic formB. basic formC. aromatic formD. zwitter ionic form |
| Answer» Correct Answer - D | |
| 11. |
Identify the correct pair of statements (i) Alternate name of thymine is 5- methyl uracil (ii) Arachidonic acid molecule contains less number of carbons than palmitic acid (iii) Cellulose contains helices (iv) Aquaporin is a polypeptideA. II and IIIB. I and IIC. II and IVD. I and IV |
| Answer» Correct Answer - D | |
| 12. |
The transfer of a group from a donor molecule to an acceptor molecule is catalysed byA. transferaseB. isomeraseC. proteaseD. hydrolytic enzymes |
| Answer» Correct Answer - A | |
| 13. |
In how many interlocking rings are the carbon atoms arranged in a steroid moleculeA. OneB. TwoC. ThreeD. Four |
| Answer» Correct Answer - D | |
| 14. |
The most abundant protein in the whole of the biosphere isA. collagenB. insulinC. trypsinD. RuBisCO |
| Answer» Correct Answer - D | |
| 15. |
The most abundant molecule in cell isA. waterB. carbohydrateC. lipids with phosphatesD. protein |
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Answer» Correct Answer - A Celullar pool consists of both organic and inorganic compounds. The relative percentage of each of these is as follows Water-80% protein-12% Lipids-3.0% Nucleic acid-2.0% Cabohydrates-1.0% Inorganic salt-1.0% |
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| 16. |
Fatty acids containA. greater proportion of oxygen that in carbohydratesB. no oxygenC. equal oxygen in comparison to carbohydratesD. less oxygen than in carbohydrates. |
| Answer» Correct Answer - D | |
| 17. |
Cellobiose, the hydrolytic breakdown product of cellulose isA. a monosaccharideB. a disaccharideC. a tetrasaccharideD. a trisaccharide |
| Answer» Correct Answer - B | |
| 18. |
Coenzymes NAD and NADP contain the vitaminA. niacinB. biotinC. thiaminD. vitamin-`B_(12)` |
| Answer» Correct Answer - A | |
| 19. |
The most abundant chemical in living organisms could beA. rpoteinB. waterC. sugarD. nucleic acid |
| Answer» Correct Answer - B | |
| 20. |
Buchner proved that it is not living yeast, but a non-living substance in it which causes fermentation. This substance isA. ureaseB. lipaseC. zymaseD. protease |
| Answer» Correct Answer - C | |
| 21. |
All the living cells containA. DNA onlyB. RNA onlyC. Both (a) and (b)D. ATP only |
| Answer» Correct Answer - C | |
| 22. |
The ratio between hydrogen and oxygen in a carbohydrate isA. `5:1`B. `4:3`C. `3:1`D. `2:1` |
| Answer» Correct Answer - D | |
| 23. |
Cellulose is formed by union of repeated residues ofA. amino acidsB. lipidsC. glucoseD. fructose |
| Answer» Correct Answer - C | |
| 24. |
Which is a carbohydrate having `beta`-repeated unitsA. pectinB. LigninC. Both (a) and (b)D. Cellulose |
| Answer» Correct Answer - D | |
| 25. |
The organic compounds, which have transient association with apoenzymes are calledA. holoenzymeB. coenzymeC. prosthetic groupD. none of these |
| Answer» Correct Answer - B | |
| 26. |
Starch and cellulse are the compounds of many units ofA. amino acids, water, mirals, nucleotides and sugarB. glycerolC. simple sugarD. fatty acids |
| Answer» Correct Answer - C | |
| 27. |
Glycosidic linkage at place of branching in starch and glycogen isA. `alpha-1to6`B. `alpha-1to4`C. `beta-1to4`D. `beta-1to6` |
| Answer» Correct Answer - B | |
| 28. |
Which one of the following glycosidic linkages is found in maltose?A. `beta-1,4`B. `alpha-4,1`C. `beta-4,1`D. `alpha-1,4` |
| Answer» Correct Answer - D | |
| 29. |
Which enzyme is not proteinaceous?A. IsozymeB. RibozymeC. HolozymeD. Trypsin |
| Answer» Correct Answer - B | |
| 30. |
Which one value is required for better enzymatic actionA. High `K_(i)`B. Low `K_(i)`C. Low `K_(m)`D. High `K_(m)` |
| Answer» Correct Answer - C | |
| 31. |
Which of the following is the simplest amino acidA. glycineB. lysineC. tyrosineD. aspartic acid |
| Answer» Correct Answer - A | |
| 32. |
Enzymes often have additional parts in their structrue that are made up of molecules other than proteins. When this additional chemical part is an organic molecule, it is calledA. cofactorB. coenzymeC. Both (a) and (b)D. substrates |
| Answer» Correct Answer - C | |
| 33. |
Relation between amino acid and protein is similar to one that found annd fructoseA. glucose and fructoseB. thymine and uracilC. nucleosides and nucleic acidD. nucleotides and nucleic acid |
| Answer» Correct Answer - D | |
| 34. |
Catalytic activity of enzymes is influenced byA. temperatureB. pH and enzyme positionsC. concentration, substrate and cofactorsD. all of the above |
| Answer» Correct Answer - D | |
| 35. |
Co-enzymes I. are needed for the function of particular enzymes. II. Are inorganic molcules III. Are organic molecules IV. FAD and FMN contain niacin, while NAD and NADP contain riboflavin.A. Only IB. II and IVC. Only IVD. I and III |
| Answer» Correct Answer - D | |
| 36. |
The catalytic efficiency of two different enzymes can be compared by theA. formation of the productB. pH of optimum valueC. `K_(m)` valueD. Molecular size of enzyme |
| Answer» Correct Answer - C | |
| 37. |
Which of the `beta`-protein is stable in nature?A. `beta`-antiparallelB. `beta`-parallelC. `alpha`-pleated sheetD. None of these |
| Answer» Correct Answer - A | |
| 38. |
The enzymes I. are protein with catalytic activities. II. Are colloidal in nature. III. Working within the cell are called simple enzymes. IV. Increase the activation energy of the reaction they catalyse.A. Only IB. Only IIIC. I and IID. I and III |
| Answer» Correct Answer - C | |
| 39. |
Arrange the steps of catalytic action of an enzyme in order an choose the right option (A) The enzyme releases the products of the reaction and the enzyme is free to bind to another substrate (B) The active site of enzyme is in close proximity of the substrate and breaks the chemical bonds of the substrate (C) The binding of substrate induces the enzyme to alter its shape fitting more tightly around the substrate (D) The substrate binds to the active site of the enzyme fitting into the active siteA. IV,III,II,IB. III,II,I,IVC. IV,II,I,IIID. II,I,IV,III |
| Answer» Correct Answer - A | |
| 40. |
Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of theseA. enhance oxidative metabolismB. are conjugated proteinsC. are wexlusively ssynthesised in the body of a living organism at presentD. help in regulating metabolism |
| Answer» Correct Answer - D | |
| 41. |
The enzyme which catalyses the formation of glutamine from its substrate belongs to categoryA. ligasesB. lyasesC. lydrolasesD. transferases |
|
Answer» Correct Answer - A A typical fat molecule is triglyceride formed by esterificationof one glycerol and three fatty acid molecules. The three fatty acids can be either be of same type or different type depending on the type of the fat molecules. |
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| 42. |
Histidine decarboxylase enzyme belongs to the categoryA. oxidoreductasesB. isomerasesC. lyasesD. ligases |
| Answer» Correct Answer - C | |
| 43. |
With reference to enzymes, which one of the following statements is true ?A. Apenzyme=Holoenzyme+CoenzymeB. Holoenzyme=Apoenzyme +CoenzymeC. Coenzyme=Apoenzyme+HoloenzymeD. Holoenzyme=Coenzyme-Apoenzyme |
| Answer» Correct Answer - B | |
| 44. |
Nobel prize for discovering enzyme was given toA. fischerB. AltmannC. flemingD. buchner |
| Answer» Correct Answer - D | |
| 45. |
How many categories of enzymes have been recognised by IUB?A. fiveB. SixC. SevenD. Eight |
| Answer» Correct Answer - B | |
| 46. |
Nitrogen bass areA. homocyclicB. heterocyclicC. open chain hydrocarbonsD. all of the above |
| Answer» Correct Answer - B | |
| 47. |
Which nitrogen base is this A. CytosineB. ThymineC. AdenineD. uracil |
| Answer» Correct Answer - A | |
| 48. |
Which primidine base is not the part of RNA structure?A. ThymineB. UracilC. CytosineD. Guanine |
| Answer» Correct Answer - A | |
| 49. |
The percentage of mRNA amongst total RNA of cell isA. 0.5-1%B. 3-5%C. 15-20%D. More than 25% |
| Answer» Correct Answer - B | |
| 50. |
Nucleotide constituent of RNA areA. adenine, guanine, cytosine, uracilB. adenine, guanine cytosine, thimineC. thymine, cytosine, xathine, uracilD. cytosine, adenine, uric acid, guanine |
| Answer» Correct Answer - A | |