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• 3. What is a polypeptide chain's approximate molar mass (in kDa) with 200 amino acid residues?
• 4.Which amino acid exhibits a specific UV absorption at 280 nm? (A) Lys (B) Tyr (C) His (D) Gln (E)
• 11. In a binary star system, Star A, which has triple the mass of Star B, orbits their common center
• 5. Given an amino acid titration curve shown in the figure. What is its isoelectric point (pI)?(A) 2
• 29. 英文名稱為 (A) Methylpropanoic acid (B) Butanoate (C) Methylpropanoate (D) 2-Methylpropante。
• (12). If f'(c) = 0 or fail to exist then f(c) is a relative extrema.(A)O(B)X
• 22.欲從定量瓶中吸取20mL標準溶液，下列何種器具所量取之體積為 最精確？ (A)20mL球形吸量管 (B)20mL刻度吸量管 (C)20mL量筒 (D)50mL滴定管
• 23.稱取1.61克的過錳酸鉀(KMnO4)並溶於水中，最後溶液的總體積為200.0mL，則此溶液之體積莫耳濃度為何？(原子量：K=39.0， Mn=55.0，O=16.0) (A)0.0080M (
• (13). sin2x =(1 + cos2x)(A)O(B)X
• 12. What is the restoring constant (torsional constant) for a disk of mass 3.0 kg and radius 0.20 m
• 6. Both water and glucose possess an-OH group that can react with the terminal phosphate of ATP in a
• 7. In living cells, nucleotides and their derivatives can serve as: (A) carriers of metabolic energ
• 8. What is the purpose of using reverse transcriptase in DNA-based technologies? (A) To transcribe R
• 9. CRISPR-Cas9 technology is used for: (A) DNA amplification. (B) gene silencing. (D) protein synthe
• 10. Which of the following statements concerning receptor enzymes is correct? (A) They are not usual
• 11. The E. coli recombinant plasmid pBR322 has been widely utilized in genetic engineering experimen
• 12. Which is a characteristic of sphingolipids? (A) They all contain a fatty acid joined to glycerol
• 13. Which of these statements about triacylglycerol synthesis is correct? (A) Humans can store more
• 14.What are the products of β oxidation of a saturated 20-carbon fatty acid? (A) 1 propionyl-CoA, 9
• 15. For skeletal muscle, which of the following correctly pairs the activity state with the source
• 16. Which of the following is true of glucagon? (A) It is released from the pancreatic β-cells when
• 17. Oxidation-reduction reactions in biological system always involve； (A) direct participation of o
• 18. Carotenoids have primary roles in photosynthesis as: (A) accessory light-harvesting and photoox
• 19. Epinephrine triggers an increased rate of glycolysis in muscle by: (A) activation of hexokinase.
• 20. Which of the following reactions in glycolysis is a ketose to aldose isomerization? (A) Hexokina