Question Bank (MCQ) Arts, Commerce and Science College Bodwad. S.Y.Bsc Zoology Paper II : Biochemistry ZOO 302 Biochemistry Q.No. Multiple Choice Question Ans In glycolysis glucose is converted into…… 1. B A) Fructose B) Pyruvate C) Carbohydrate D) Pyruvic acid ………is a metabolic process responsible for glucose degradation. 2. A A) Glycolysis B) Gluconeogenesis C) Glucolytic D) Proteolysis ………. is a metabolic processes responsible for metabolite 3. B A) Glycolysis B)Gluconeogenesis C Glycolytic D) Proteolysis Gluconeogenesis takes place mostly in……….. 4. D A) Heart B) Kidney C) Stomach D) Liver Gluconeogenesis is exactly opposite process of ………. 5. A A) Glycolysis B) Lyponeogenesis C) Glucolytic D) Proteolysis Kreb Cycle is also called as .................. cycle 6. C A) BCA B) AKA C) TCA D) TCB Glycolysis takes place in............... organism. 7. C A) Aerobic B) Anaerobic C)Both(A) and (B) D) None The general test for detection of carbohydrates is ………….. 8. B A) Iodine test B) Molisch test C) Barfoed test D) Osazone test Pentose production is increased in 9. A A) HMP shunt B) Uromic acid pathway C) EM pathway D) TCA cycle Conversion of Alanine to carbohydrate to known……… 10. B A) Glycogenesis B)Gluconeogenesis C) Gluconeogenolysis D) Photosynthesis The following is an enzyme required for glycolysis:………… 11. A) Pyruvate kinase B) Pyruvate carboxylase A C) Glucose-6-phosphatase D) Glycerokinase Our body can get pentoses from ………. 12. A) Glycolytic pathway B) Uromic acid pathway D C) TCA cycle D) HMP shunt Conversion of glucose to glucose 6- phosphate in liver is by……… 13. A) Hexokinase only B) Glucokinase only C C) Hexokinase and glucokinase D) Glucose-6-phosphate dehydrogenase Which of the following is not an enzyme involved in glycolysis? 14. D A) Euolase B) Aldolose C) Hexokinase D) Glucose oxidase The following is an enzyme required for glycolysis:………… 15. A) Pyruvate kinase B) Pyruvate carboxylase A C) Glucose-6-phosphatose D) Glycerokinase The tissues with the highest glycogen content are……. 16. A) Muscle and kidney B) Kidney and Liver C C) Liver and muscle D) Brain and Liver Glucose absorption may be decreased in…… 17. A A) Oedema B) Nephritis C) Rickets D) Osteomalitis Glycogen synthetase activity is depressed by 18. C A) Glucose B) Insulin C) Cyclic AMP D) Fructokinase The branching enzyme acts on the glycogen when the glycogen chain has been 19. lengthened to between glucose units:……… D A) 1 and 6 B) 2 and 7 C) 3 and 9 D) 6 and 11 Cyclic AMP is formed from ATP by the enzyme adenylate cyclase which is 20. activated by the hormone:………. B A) Insulin B) Epinephrine C) Testosterone D) Progesterone Hexokinase has a high affinity for glucose than…… 21. C A) Fructokinase B) Galactokinase C) Glucokinase D) All of the above Dihydroxyacetone phosphate and glyceraldehyde 3-phosphate are intercoverted by…… 22. B A) Triose isomerase B) Phosphotriose isomerase C) Diphosphotriose somerase D) Dihydroxyacetone phosphorylase Citrate is converted to isocitrate by aconitase which contains………. 23. A) Ca++ B) Fe++ B C) Zn++ D) Mg++ The reaction succinyl COA to succinate……… 24. + B A) CDP B) ADP C) GDP D) N ADP The carrier of the citric acid cycle is………….. 25. A) Succinate B) Fumarate D C) Malate D) Oxaloacetate Gluconeogenesis is increased in the following condition:……….. 26. A) Diabetes insipidus B) Diabetes Mellitus B C) Hypothyroidism D) Liver diseases The number of molecules of the ATP produced by the oxidation of acetyl CoA 27. in TCA cycle is………… D A) 6 B) 8 C) 10 D) 12 Kreb cycle takes place in…….. 28. A) Nucleus B) Ribosome C C) Mitochondria D) Golgi bodies Kreb cycle Converts Pyruvate to energy in the form of……. 29. A A) ATP B) ADP C) Pi D) Glucose The cellular energy currency is ……. 30. B A) Dollar B) ATP C) Cells D) ADP Dietary fats after absorption appear in the circulation as……….. 31. D A) HDL B) VLDL C) LDL D) Chylomicron Free fatty acids are transported in the blood…….. 32. A) Combined with albumin B) Combined with fatty acid binding protein A C) Combined with β – ibuprotein D) Ibutein free salts Long chain fatty acids are first activated to CoA in… 33. A A) Cytosol B) Microsomes C) Nucleus D) Mitochondria The enzyme acyl-CoA synthase catalyses the conversion of a fatty acid of an 34. active fatty acid in the presence of….. C A) AMP B) ADP C) ATP D) GTP The enzymes of β-oxidation are found in 35. A A) Mitochondria B) Cytosol C) Golgi apparatus D) Nucleus Long chain fatty acids penetrate to inner mitochondrial membrane….. 36. A) Fatty B Acetyl CoA derivative C C) As carnitine derivative D) Requiring Na dependent carrier Atherosclerosis and coronary heart diseases are associated with the diet:… 37. A) High in total fat and saturated fat B) Low in protein A C) High in protein D) High in carbohydrate Cerebrovasular disease and hypertension is associated with………….. 38. A) High calcium intake B) High salt intake B C) Low calcium intake D) Low salt intake β-oxidation is breakdown of…………Acetyl CoA 39. D A) Glucose B) Proteins C) Enzymes D) Fatty acids β-oxidation is takes place in ….. 40. A A) Mitochondria B) Cytosol C) Golgi apparatus D) Nucleus β-oxidation is… .......... process. 41. A) streakly aerobic B) streakly anaerobic A C) anaerobic D) Both A and B Fatty acid oxidation does not happens in …… 42. C A) Heart B) Liver C) Brain D) Kidney Lipogenesis is the process of production of …… 43. A A) Lipid B) Carbohydrate C) Protein D) Enzymes The major storage form of lipids is……. 44. A) Esterified cholesterol B) Glycerophospholipids C C) Triglycerides D) Sphinolipids β-Oxidation of fatty acid requires all the following coenzymes except……… 45. D A) CoA B) FAD C) NAD D) NADP Which of the following can be oxidized by β-oxidation pathway? 46. A) Saturated fatty acids B) Monosaturated fatty acids D C) Polyunsaturated fatty acids D) All of these Ketone bodies are synthesized in…… 47. B A) Adipose tissue B) Liver C) Muscles D) Brain Niemann-Pick disease results from deficiencies from. 48. A) Ceramidase B) Spingnomylinase B C) Arylsulphatase A D) Hexosaminidase A Lipids are stored in the body mainly in the form of……. 49. A) Phospholipids B) Glycolipids C C) Triglycerides D) Fatty acids Fat depots are located in….. 50. A) Intermuscular connective tissue B) Mesentary D C) Omentum D) All of these Breakdown of……is lipolysis. 51. A A) Lipid B) Carbohydrate C) Protein D) Enzymes All proteins contain the….. 52. A) Same 20 amino acids B) Different amino acids A C) 300 Amino acids occurring in nature D) Only a few amino acids Proteins contain……. 53. A) Only L- α - amino acids B) Only D-amino acids A C) DL-Amino acids D) Both (A) and (B) The main sites for oxidative deamination are…… 54. A) Liver and kidney B) Skin and pancreas A C) Intestine and mammary gland D) Lung and spleen A positive nitrogen balance occurs…. 55. A) In growing infant B) Following surgery A C) In advanced cancer D) Kwashiokar The main site of urea synthesis in mammals… 56. A A) Liver B) Skin C) Intestine D) Kidney The enzymes of urea synthesis are found in…. 57. A) Mitochondria only B) Cytosol only C C) Both mitochondria and cytosol D) Nucleus The number of ATP required for urea synthesis is 58. D A) 0 B) 1 C) 2 D) 3 Most of the ammonia released from L-amino acid reflects the coupled action of transaminase and…… 59. A) L-glutamate dehydrogenase B) L-amino acid oxidase A C) Histidase D) Serine dehydratase In urea synthesis, the amino acid functioning solely as an enzyme activator:….. 60. A) N-acetyl glutamate B) Ornithine A C) Citrulline D) Arginine Control of urea cycle involves the enzyme:……. 61. A) Carbamoyl phosphaste synthatease B) Orritine transcarbamoylase A C) Argininosuccinase D) Argenase Transfer of the carbamoyl moiety of carbamoyl phosphate to ornithine is catalysed by a liver mitochondrial enzyme:………….. 62. B A) Carbamoyl phosphate synthetase B) Ornithine transcarbamoylase C) N-acetyl glutamate synthetase D) N-acetyl glutamate hydrolase A compound serving a link between citric acid cycle and urea cycle is…….. 63. D A) Malate B) Citrate C) Succinate D) Fumarate Small amount of urinary oxalates is contributed by the amino acid:……….. 64. A A) Glycine B) Tyrosine C) Alanine D) Serine The amino acid which detoxicated benzoic acid to form hippuric acid is…… 65. A A) Glycine B) Alanine C) Serine D) Glutamic acid Non-Protein amino acids are ………. 66. A) Ornithine B) β-alanine A C) γ-amino butyric acid D) All of thease The amino acid that undergoes oxidative deamination at significant rate is…… 67. C A) Alanine B) Aspartate C) Glutamate D) Glutamine The major site of urea synthesis is….. 68. B A) Brain B) Kidneys C) Liver D) Muscles The following enzyme of urea cycle is present in cytosol:………….. 69. A) Argininosuccinic acid synthetase B) Argininosuccinase D C) Arginase D) All of these ATP is required in following reactions are of Urea Cycle……….. A) Synthesis of carbamyle phosphate and citrulline B) Synthesis of citrulline and argininosuccinate 70. C C) Synthesis of argininosuccinate and arginine D) Synthesis of carbamoyl phosphate and Argininosuccinate Daily excretion of nitrogen by an adult man is about………… 71. C A) 15–20 mg B) 1.5–2 gm C) 5–10 gm D) 15–20 gm Amino acid synthesis is a process in which… .......... are produced. 72. A) Amino acids B) Protein C. Fat D) Acids A Transfer of an amino group from amino acid to kito acid is called as …….