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1. The color of a gold nanoparticle is determined by its

A. Size B. Age C. Density D. Mass

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2. Substrate combines more firmly with enzyme, when

A. Km is high B. Ki is high C. Ki is low D. Km is low

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3. Which method detects the smallest particles

A. Scanning Tunneling Microscopy B. Atomic Force Microscopy C. Scanning Electron Microscopy D. Microfluidics

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4. Phenanthrene is more stable than its linear isomer anthracene. This is explained on basis of

A. Clar's rule B. Huckel's rule C. Bredt's rule D. Duckworth rule

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5. Water-soluble flavonoid polymers are

A. Flavanols B. Isoflavonoids C. Tannins D. Anthocyanins

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6. Zica virus is _____ transmitted by _____

A. Flavivirus, mosquito B. Hepacivirus, sandfly C. Pegivirus, aphid D. Pestivirus, housefly

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7. Which drugs are metabolized to products that irreversibly inhibit the metabolizing

A. CYP3A4 inhibitor B. Slow acetylators C. Suicide inhibitors D. Pgp inhibitors

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8. Optical fibers used in communication system works on the principle of

A. Refraction B. Total internal reflectance C. Diffraction D. Polarization

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9. Under what circumstances Raoult’s law becomes Henry's law

A. When Kp = p₀ B. When Kp >> p₀ C. When Kp << p₀ D. None of the above

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10. Acidic functional group in picric acid

A. -COOH B. -OH C. -SO₃H D. -NO₂

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11. The difference in molecular weight of sucrose and that of the sum of molecular weight of glucose and fructose, its components is

A. 0 B. 1 C. 16 D. 18

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12. pH 2 is more acidic than pH 4 by

A. 2 fold B. 10 fold C. 20 fold D. 100 fold

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13. DNA without introns is

A. B DNA B. Z DNA C. Mitochondrial DNA D. C DNA

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14. Ribosome has the following enzymatic activity

A. Peptidyl Transferase B. Amino acyl t-RNA synthetase C. Peptidase D. GTPase

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15. The compound added to disrupt the disulfide bonds present in the proteins is

A. TEMED B. β-mercaptoethanol C. APS D. SDS

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16. Which of the following is NOT a benefit of carrying inventories

A. Reduction in ordering cost B. Avoiding lost sales C. Avoiding production cost D. Reducing carrying cost

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17. Margaret Dayhoff developed the first protein sequence database called

A. SWISS PORT B. PDB C. Atlas of protein and structure D. Protein sequence databank

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18. Which of the speculators expects the price of securities and shares to rise in the near future

A. Bull B. Bear C. Stag D. Lane duck

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19. For a generic drug to be bioequivalent to an innovator drug (per FDA), it must be measured in _____ of subjects to fall within _____ of the mean of the test population bioavailability

A. 50, 50 B. 80, 20 C. 20, 80 D. 95, 5

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20. The 5-Hydroxy tryptamine antagonist which has the anti-hypertensive effects is

A. Methysergide B. Ondansetron C. Ketanserin D. Cyproheptadine