1. In oxidative phosphorylation, the ATP production and respiratory chain are linked by- Physical methods Conformational changes Chemiosmotic methods Chemical methods 2. The conversion of an optically pure isomer (enantiomer) into a mixture of equal amounts of both dextro and levo forms is called as Fractionation Polymerisation Racemization Stereoisomerisation 3. which of the following is used to detect the chromosomal differences between neoplastic cells and their normal counterparts PCR Comparative genomic hybridization Spectral karyotyping western blotting 4. Fructose 2-6 biphosphate is Positive allosteric regulation of PF2 Negative allosteric regulation of PF1 Positive allosteric regulation of PF1(phosphofructokinase 1) Intermediate of glycosis 5. Proteins are seperated on the basis of charge in Ultracentrifugation Affinity chromatography SDS-PAGE HPLC 6. Which of these amino acids does not enter the krebs cycle by forming Acetyl-CoA via pyruvate Alanine Glycine Tyrosine Hydroxyproline 7. What will happen to structure of alpha helix if L-alanine is replaced by d-alanine alternatively Increased stereoisomerism Increased stability Interruption of structure Change in optical activity 8. True about denatured proteins Biologically inactive Peptide bonds are hydrolysed Primary structure of amino acid sequence is disrupted Soluble in water 9. all the statements regarding LDL receptors are true except clathrin-coated pits contain the receptor on cell membranes present only in extra-hepatic tissues increased cellular cholesterol down regulates the synthesis of LDL receptors it is taken into the cells by endocytosis 10. Maple syrup urine disease is due to Transaminase Mutase isomerise alpha-ketoacid decarboxylase 11. fluorescence means spontaneous illumination in dark release of longer wavelength light on absorbing light of shorter wavelength release of shorter wavelength light on absorbing light of longer wavelength release of equal wavelength light at constant rate 12. which of the following is the major contributor to colloid osmotic pressure beta globulin albumin alpha globulin gamma globulin 13. Key enzyme in glycogenolysis Branching enzyme Glycogen phosphorylase Glycogen synthase Debranching enzyme 14. Maximum energy is liberated by hydrolysis of Phosphenol pyruvate Creatine phosphate Glucose-5-phosphate ATP 15. Which of the following is not an intermediate of citric acid cycle Citrate Succinyl CoA a-ketoglutarate Acetyl-CoA 16. HMP shunt is of great importance in cellular metabolism because it produces Acetyl Co A ATP ADP NADPH 17. Inhibition of glycolysis by oxygen is known as Pasteur effect Muni effect Gluconeogenesis Hill reaction 18. Which is not a monosaccharide Fructose Galactose Glucose Maltose 19. one of the following is not a precursor of adrenaline dopamine nor adrenaline isoprenaline phenylalanine 20. Guanidinium group is associated with Histidine Tyrosine Arginine Lysine Loading … Question 1 of 20
