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 […]
Q60.Glucose sensors utilizes ______ as bioreceptor. (1) Glucose oxidase(2) Glucose kinase(3) Glucose dehydrogenase(4) Both 1 and 3 Glucose sensors rely on specific enzymes as bioreceptors to detect glucose levels accurately. […]
Q59.Formation of glycogen cannot be initiated in the absence of enzyme (1) Glucokinase(2) Glycogenin(3) Glycogen phosphorylase(4) Glycogen kinase Glycogen formation, or glycogenesis, requires a primer protein to start the process. […]
Q58.Mammals do not have ability to convert fatty acids to glucose because (1) They cannot undergo glyoxylate cycle(2) There is no need for such conversion(3) They can obtain glucose from […]
Q57.The unit of maximum specific growth rate (μmax) is: (1) Hours⁻¹(2) Hours(3) Hours/litre(4) Hours/cell The unit of maximum specific growth rate (μmax) is hours⁻¹. This is a standard concept in […]
Q56.Which of the following regulation occurs in slowest time frame? (1) Feedback regulation(2) Allosteric regulation(3) Regulation through covalent modification(4) Enzyme synthesis through gene induction Enzyme regulation time frames vary significantly, […]
