資訊推薦

• 80. How does damming or altering the path of a river destroy wetlands? (A) Fish can no longer migrat
• 33. What is the definition of the constant Km of the Michaelis-Menten equation in enzyme kinetics? (
• 34. Which amino acid has an indole ring? (A) Asn (B) Trp (C) Lys (D) Pro
• 35. What is the primary mean by which the activity of allosteric enzymes? (A) Cleavage of zymogens (
• 36. Which amino acid significantly affects the tertiary structure of the protein? (A) Asn (B) Trp (C
• 37. What is zymogen? (A) Enzymes that are synthesized as inactive precursors and activated by cleava
• 38. Which amino acid plays a key role in N-linked glycosylation? (N-glycans are attached to the nitr
• 39. Which of the following is a polysaccharide that serves as a structural component in the exoskele
• 40. Which of the following characteristics describe glycoproteins? (A) Proteins with covalently atta
• 41. What is the difference between RNA and DNA? (A) RNA contains thymine, while DNA contains uracil
• 42. How are nucleotides joined together to form nucleic acids? (A) By covalent bonds between the pho
• 43. Which of the following aqueous solutions has the lowest pH? The solutions have H+ concentration
• 44. What is a method for routine DNA sequencing of gene segments? (A) Polymerase chain reaction (PCR
• 45. What is the role of adenosine triphosphate (ATP) in cells? (A) It is a cofactor for enzyme catal
• 46. How does the genetic code vary among different species? (A) There are significant variations in
• 47. Which technique allows for the amplification of chosen segments of DNA for cloning? (A) Polymera
• 48. Which of the following is NOT a signal for termination of translation in bacteria? (A) UGA (B) U
• 49. What is the primary function of triacylglycerols? (A) To act as a storage form of energy (B) To
• 50. Where does transcription stop in bacteria? (A) At the terminator sequence (B) At the complementa
• 51. Which amino acid residues are commonly found at the lipid-water interface of transmembrane prote
• 52. What is the first step of bacterial transcription? (A) Binding of RNA polymerase to the promoter
• 53. What is the primary factor that affects the fluidity of biological membranes? (A) The temperatur
• 54. What is the primary fuel for heart muscle to obtain ATP? (A) Glucose (B) Fatty acids (C) Ketone
• 55. What type of transport is used by the lactose transporter of (E) coli? (A) Passive transport (B)
• 56. What is the end products of purine degradation in human? (A) Uric acid (B) Creatinine (C) Ammoni