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Q70.Which of the following sentences is not true for pyrosequencing? (1) It is based on detection of pulses of chemiluminescence(2) Requires the activity of enzyme sulfurylase(3) Requires addition of dideoxynucleotides(4) […]

Q69.Obligate anaerobes are not able to survive in the presence of oxygen because of: (1) Absence of both catalase and superoxide dismutase(2) Presence of both catalase and superoxide dismutase(3) Presence […]

Q68.Pervaporation is (1) Ion removal(2) Separation of liquids(3) Separation of solids(4) Water purification Pervaporation MCQ: Correct Answer and Detailed Explanation Pervaporation is a key membrane separation process used in chemical […]

Q67.Separation of components in gas chromatography is based on (1) Molecular weight(2) Partition coefficient(3) Molarity(4) Conductivity Gas Chromatography Separation: Partition Coefficient MCQ Guide Gas chromatography (GC) separates volatile compounds based […]

Q66.Key protein involved in complement activation is (1) C5(2) C8(3) C9(4) C3 Key Protein in Complement Activation: C3 Explained C3 stands out as the central protein driving complement activation across […]

Q65.Phenylketonuria is caused by dysfunction of (1) Phenylalanine hydroxylase(2) Phenylalanine monooxygenase(3) Phenylalanine mutase(4) Phenylalanine dioxygenase Phenylketonuria Enzyme Deficiency Explained Phenylketonuria (PKU) results from deficiency in phenylalanine hydroxylase, causing toxic phenylalanine […]

Q64.Carbamoyl phosphate synthetase I (first enzyme in urea cycle) is allosterically regulated by: (1) N-acetylglutamate(2) N-acetylglucosamine(3) N-acetylgalactosamine(4) N-acetylgluconate Carbamoyl Phosphate Synthetase I Regulation Carbamoyl phosphate synthetase I (CPS1), the urea […]

Q63.ATP molecules produced by oxidation of one molecule of palmitoyl-CoA to CO₂ and H₂O are (1) 38(2) 108(3) 148(4) 40 Palmitoyl-CoA Oxidation: ATP Yield Explained Complete oxidation of one palmitoyl-CoA […]

Q62.Purity of DNA samples can be checked by measuring the ratio of absorbances at 260 and 280 nm. For a pure DNA sample the ratio should be (1) 1.8(2) < […]

Q61.Optical density is based on (1) Light refraction(2) Light adsorption(3) Light diffraction(4) Light scattering Correct Answer: Optical Density is Based on Light Absorption In physics and spectrophotometry, optical density (OD) is defined […]