資訊推薦

• 20. What is the quaternary structure in proteins? (A) The arrangement of a protein's side chain
• 16. All are characteristics associated with \"brown fat\" except: (A) high levels of mit
• 21. What is the primary carrier of energy within cells? (A) NADH (B) NADPH (C) FADH2 (D) ATP
• 17. From the abbreviated name of the compound Gal(β1→4)GIc, we know that: (A) C-4 of glucose is join
• 22. What is the role of Hsp70 chaperones and chaperonins in protein folding? (A) They catalyze the d
• 23. What is the primary electron donor in reductive biosynthesis? (A) NADH (B) NADPH (C) FADH2 (D) A
• 24. Which of the following statements is true regarding hemoglobin? (A) Oxygen binding to hemoglobin
• 25. Which is NOT a key tool for forming recombinant DNA molecules? (A) Restriction enzyme (B) DNA li
• 26. Which immunoglobulin class is the most abundant in humans? (A) IgA (B) IgG (C) IgD (D) IgE
• 27. Which technique exploits the binding specificity of immunoglobulins? (A) Western blotting (B) No
• 28. Which of the following methods can determine protein sequence? (A) Polymerase chain reaction (PC
• 29. What is the function of Ca2+ in muscle contraction? (A) It binds to myosin to promote its dissoc
• 30. Which step of polymerase chain reaction (PCR) cycle requires the highest temperature? (A) Anneal
• 31. What is the function of enzymes in a reaction? (A) To stabilize the reaction products (B) To cha
• 2. A major component of RNA but not of DNA is: (A) adenine. (B) cytosine. (C) guanine. (D) thymine.
• 3. In the Watson-Crick model for the DNA double helix (B form), the A-T and G-C base pairs share wh
• 4. Which of the following does not apply to the construction or use of a DNA library? (A) Determinin
• 5.Which vitamin is derived from cholesterol? (A) A (B) B12 (C) D (D) E (E) K
• 6. The shortest o helix segment in a protein that will span a membrane bilayer has about_____amino a
• 7. Which of the following statements concerning receptor enzymes is correct? (A) They are not usuall
• 8. Glycolysis is the name given to a metabolic pathway occurring in many different cell types. It co
• 9. Which one of the following enzymatic activities would be decreased by thiamine deficiency? (A) Fu
• 10. Which of these is able to cross the inner mitochondrial membrane? (A) Acetyl-CoA (B) Fatty acyl-
• 16.Some neurotransmitters or biological amines are derived from the decarboxyl amino acids. Which am
• 20.What are the enzymes inhibited by the medical agents or drugs listed b (A)Fluorouracil, (B) Metho