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Biochemistry MCQ Set 2

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1. Arrangement of nucleotides in DNA can be seen using which of the following instruments?




2. Which of the following involves carrying genetic information from DNA for protein synthesis?




3. Which of the following is true about tm?




4. Which of the following is true about the Z-DNA helix?




5. Which of the following temperature best suits the growth and multiplication of transformed cells?




6. Which of the following enzyme is used in PCR?




7. Which of the following temperature best suits the growth and multiplication of transformed cells?




8. Which of the following enzyme is used in PCR?




9. Which of the following temperature best suits the growth and multiplication of transformed cells?




10. Recombinant DNA construction involves ____________




11. Which of the following is termed as conserved gene order?




12. Meristem culture helps in developing which of the following?




13. Biochemistry MCQ on Lipids, Biological Membranes and Transport 1. The number of milligrams of KOH required to neutralize the free and combined fatty acid in one gram of a given fat is called __________




14. Which of the following membrane lipids have a direct glycosidic linkage between the head-group sugar and the backbone glycerol?




15. Which of the following hormone is responsible for the activation of phospholipase C?




16. Which of the following membranes contain low cholesterol and high cardiolipin?




17. Which of the following is a choline-containing lipid?




18. Which of the following proteins does not function in cell-cell interaction?




19. How many types of signal transducers are there?




20. Which of the following is a intracellular second messengers?




21. Which of the following is not correct about phosphorylation by IRS on serine residue?




22. Which of the following catalyzes the cutting of PIP2 into 2 moles of IP3 and diacylglycerol in cell signaling?




23. Which of the following directly phosphorylate tyrosines to start a kinase protein enzymatic cascade?




24. When visual stimulus reaches receptors in retina of eye, first process involving absorption of physical energy by receptors is?




25. Which of the following drug is used to terminate early pregnancies?




26. Which of the following occurs in meiosis but not in mitosis?




27. Migration of cancerous cells from the site of origin to other part of the body forming secondary tumors is called ___________




28. Which of the following is the study of energy relationships and conversions in biological systems?




29. Anabolism and catabolism are chemically linked in the form of __________




30. Which of the following is not a flavoprotein?




31. Whenever the cell’s ATP supply is depleted, which of the following enzyme’s activity is increased?




32. Whenever the cell’s ATP supply is depleted, which of the following enzyme’s activity is increased?




33. Which of the following enzyme is responsible for the conversion of glucose 1-phosphate to glucose 6-phosphate?




34. Which is the major factor(s) determining whether glucose is oxidized by aerobic or anaerobic glycolysis?




35. Which of the following is not an important precursor of glucose in animals?




36. Which of the following is not an important precursor of glucose in animals?




37. Which of the following enzymes acts in the pentose phosphate pathway?




38. Which of the following is not a factor determining the activity of an enzyme?




39. How many steps are catalyzed by different enzymes in glycolysis and gluconeogenesis?




40. Which compounds are responsible for the coordinated regulation of glucose and glycogen metabolism?




41. Which of the following is a measure of the effect of an enzyme’s concentration on flux through a multi-enzyme pathway?




42. Which of the following is a measure of how responsive the enzyme is to changes in the concentration of a metabolite?




43. Which of the following is a measure of how responsive the enzyme is to changes in the concentration of a metabolite?




44. Which is the first step in the catabolism of most L-amino acids once they have reached the liver is promoted?




45. Which of the following operates at an important intersection of carbon and nitrogen metabolism?




46. Which of the following is the first amino group entering into urea cycle?




47. Which of the following are exclusively glucogenic?




48. Which of the following produces pyruvate?




49. Complex 4 is also known as _________




50. Which of the following is the prosthetic group of NADH dehydrogenase?




51. Long-chain fatty acids are oxidized step-wise in one-carbon unit starting from ____________




52. Which effects the increased levels of hydrogen ions in the inter-membrane space of the mitochondria?




53. How many mitochondrial proteins are encoded in nuclear genes and imported into mitochondria after their synthesis?




54. What is the effect of the excessive rate of apoptosis?




55. Which one of the following is the source of electrons in photosynthesis? a) NADH b) Water c) Carbohydrates d) Which one of the following is the source of electrons in photosynthesis?




56. Which of the following is the correct sequence for the movement of electrons during the light-dependent reactions of plants?




57. Which of the following condenses acyl and malonyl groups?




58. Which of the following class of drugs reduce the levels of fatty acids circulating in the blood?




59. Which of the following is involved in the bio-signaling pathway that includes membrane turnover and exocytosis?




60. How many carbons are present in HMG co-A?




61. Which of the following catalyzes reactions that incorporate nitrogen derived from glutamine?




62. Which of the following gives rise to methionine, threonine, and lysine?




63. Which of the following gives rise to γ-amino butyrate?




64. Which of the following is degraded to methylmalonyl semialdehyde?




65. Which of the following has the lowest level of chromosome organization?




66. Which of the following plays a substantial role in linking together sister chromatids immediately after replication?




67. Which of the following has beads on a string structure?




68. Which of the following histones shows more sequence similarity among eukaryotic species?




69. Which of the following enzymes remove supercoiling in replicating DNA ahead of the replication fork?




70. Which of the following mechanisms will remove uracil and incorporate the correct base?




71. Which of the following process occurs in regions where no large–scale sequence similarity is apparent?




72. Which of the following is not involved in the post-transcriptional processing of t-RNA?




73. Which of the following is an example of RNA-dependent DNA polymerase?




74. Which position of a codon is said to wobble?




75. Which of the following inactivates the 60S subunit of eukaryotic ribosomes?