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• 22. All of the following are true for tRNA EXCEPT:(A) each amino acid in proteins has at least one u
• 23. DNA double helix structure is stabilized by all of the following EXCEPT:(A) the sugar-phosphate
• 24. Urea and formamide are agents that denature dsDNA by(A) intercalating between base pairs and dis
• 25. In the Southern hybridization procedure, the gel after electrophoresis is treated with NaOH and
• 26. All are true for cDNA libraries EXCEPT:(A) reverse transcriptase synthesizes a DNA strand comple
• 27. An enzyme's specificity can be due to:(A) the ratio of catalyzed rate to the uncatalyzed ra
• 28. All of the following are properties of a coenzyme EXCEPT:(A) They are usually actively involved
• 29. All of the following statements about competitive inhibition are correct EXCEPT:(A) Competitive
• 30. Malonate inhibition of succinate dehydrogenase is an example of:(A) noncompetitive inhibition.(B
• 31. All are true for the enzyme-transition state complex EXCEPT:(A) It is designated as EX.(B) The e
• 32. All are true for low-barrier hydrogen bonds EXCEPT:(A) The hydrogen is centered between the two
• 33. The mechanism of chymotrypsin involves which of the following elements?(A) deprotonation of an a
• 34. HIV-1 protease is different from most mammalian aspartic acid proteases in that it has:(A) two s
• 35. All are true for cAMP-dependent protein kinase EXCEPT:(A) also known as PKA. (B) phosphorylase k
• 36. The T form (tense or taut form) of deoxyhemoglobin differs from oxyhemoglobin (the R form orrela
• 37. What is the relationship between photoautotrophs and heterotrophic cells?(A) Photoautotrophs use
• 38.__________, a pathway that synthesizes glucose from non-carbohydrate precursors, uses seven ofthe
• 39. Fructose in the diet or fructose from sucrose in the diet can be a source of calories for fat sy
• 40. Galactosemic individuals can be treated by ___________and the abnormality may disappear inadults
• 41. Isocitrate dehydrogenase has all of the characteristics EXCEPT:(A) ADP raises the Km for isocitr
• 42. All are characteristics of succinyl-CoA synthetase EXCEPT:(A) succinyl-CoA can be used to drive
• 43. Does electron transport stop if rotenone is added? Why?(A) Yes, there is not an electron source.
• 44. All are properties of glycerol-3-phosphate dehydrogenases EXCEPT:(A) one is located in the cytos
• 45. Which of the following statements about the light reactions of photosynthesis is true?(A) There
• 46. When light energy is absorbed by chlorophyll an electron is promoted to a higher orbital and the