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

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

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.

25. Which of the following RNAs works in RNA splicing? (A) rRNA (B) tRNA (C) snRNA (D) miRNA (E) mRNA

26. _____ is NOT a second messenger. (A) Ca2+ (B) Nitric oxide (C) Phosphatidylinositol 4, 5-bisphosphate (D) Sphingomyelin (E) ATP

27. Which of the following statements is FALSE? (A) The sex determined in most ants and bees is by the Z-W system. (B) Any gene located on a sex chromosome is called a sex-linked gene. (C) Nondisjunction occurs when members of a chromosome pair fail to separate. (D) The impact of a single gene on more than one character is called pleiotropy. (E) Linked genes generally do not follow the laws of independent assortment.

28. Which of the following functional groups participate in chromatin-mediated gene expression? (A) OH (B) COOH (C) CH 3(D) NH2 (E) CO

29. The eukaryotic DNA replication does NOT contain (A) ligase (B) DNA polymerase (C) helicase (D) topoisomerase (E) gyrase