18. Which of the following is required for synthesis of prothrombin and blood coagulation factors in hepatocyte?
(A) folic acid
(B) vitamin K
(C) vitamin B12
(D) vitamin A
(E) vitamin B1

14. An action potential of neuron is characterized by the following, except_____  . (A) it is initiated by opening of voltage-gated potassium channels (B) it is regarded as a regenerative response (C) it is regarded as a all-or-none response (D) it does not degrade in magnitute with space or time (E) it is transmembrane potential changes that occur in most axons

15. What is hormone most active in a person who is subjective to short-term starvation? (A) insulin (B) glucagon (C) epinephrine (D) oxytocin (E) glucocorticoids

16. Which of the following hormone secreted from hypothalamus? (A) thyrotropin releasing hormone (B) oxytocin (C) luteinizing hormone (D) glucagon (E) glucocorticoids

17. Which of the following is NOT a factor influencing membrane fluidity? (A) number of double bond in lipids (B) temperature (C) flip-flop move of lipids (D) cholesterol (E) none of the above

19. Where do you find the cells undergo meiosis in plants? (A) shoot apical meristem (B) pollens (C) embryo sacs (D) corolla (E) ovule

20. When animal cell loss its extra-membranous oligosaccharides, it will be deficient in which of the following function? (A) the aggregation of cytoskeleton (B) the intercellular recognition (C) the exchange of proton across the membrane (D) the change of membrane action potential (E) the calcium influx or efflux

21. About high blood pressure, which of the following statement is NOT correct? (A) Blood pressure is always high. (B) Systolic pressure above 144 mmHg and diastolic pressure over 90 mmHg. (C) It is caused by long term raise of cardiac ouput. (D) May be caused by kidney dysfunction. (E) Can be treated with diuretic drug.

22. Which of the following is peptide hormone? (A) thyroxin (B) epinephrine (C) antidiuretic hormone (D) progesterone (E) cortisone

23. The translation terminates in which of the following condition? ① ribosome reaches the end of mRNA② ribosome reaches the stop codon③ deficient in certain amino acid ④ no aminoacyl-tRNA enters ribosome ⑤ polypeptide folds into protein (A) ① ③(B) ②④ (C) ① ② ③ (D) ③ ④ (E) ② ③ ④

24. Cancer types can be classified according to the origin of cells or tissues. Which of the following statements is FALSE? (A) Cancers of the leukemia cells are called lymphomas. (B) Cancers of the epithelial cells are called carcinomas. (C) Cancers of the glandular cells are called adenocarcinoma. (D) Cancers of the connective tissue are called sarcomas. (E) Cancers of the glial cells are called gliomas.