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1、Contents: 29 pages Examination: 2 hours 67 multiple-choice questions (maximum of 67 marks) Additional Time Permitted: 60 minutes 6 written-response questions (maximum of 23 marks) Province of British Columbia Biology 12 Examination Booklet August 2006 Form A DO NOT OPEN ANY EXAMINATION MATERIALS UNT
2、IL INSTRUCTED TO DO SO. FOR FURTHER INSTRUCTIONS REFER TO THE RESPONSE BOOKLET. Biology 12 0608 Form A Page 1 PART A: MULTIPLE CHOICE Value: 67 marks Suggested Time: 80 minutes INSTRUCTIONS: For each question select the best answer and record your choice on the Answer Sheet provided. Using an HB pen
3、cil, completely fill in the bubble on the Answer Sheet that has the letter corresponding to your answer. You have Examination Booklet Form A. In the box above #1 on your Answer Sheet, fill in the bubble as follows. FABCDEHGExam Booklet Form/ Cahier dexamen1. What is the semi-liquid material that sur
4、rounds the organelles of a cell? A. the chromatin B. the cytoplasm C. the cytoskeleton D. the endoplasmic reticulum Use the following diagram to answer question 2. X2. What is a product of the process that occurs at the structures labelled X? A. bile B. glycogen C. hemoglobin D. phospholipids Page 2
5、 Biology 12 0608 Form A 3. What organelle contains information for the production of protein in a cell? A. the nucleus B. the nucleolus C. the Golgi body D. the smooth endoplasmic reticulum Use the following diagram to answer questions 4 and 5. WXZY4. What is produced by the organelle that packages
6、and stores proteins? A. W B. X C. Y D. Z 5. What is the function of the organelle labelled Z? A. to make ATP B. to synthesize proteins C. to hydrolyze food particles D. to package and modify proteins Biology 12 0608 Form A Page 3 6. Hydrogen bonding accounts for which of the following properties of
7、water? A. its neutral pH B. it acts as a reactant in hydrolysis C. its increased density when frozen D. its capacity to store large amounts of heat Use the following reaction to answer question 7. molecule X + molecule X ? dipeptide + H2O 7. What is molecule X? A. glucose B. peptidase C. a nucleotid
8、e D. an amino acid Use the following diagram to answer question 8. P8. What is a function of a polymer that is made up of the molecule above? A. to increase metabolic rate B. to increase blood pressure C. to store genetic information D. to store the energy produced in respiration Page 4 Biology 12 0
9、608 Form A 9. Which type of molecule catalyzes metabolic reactions? A. CH3CH3B. HCHHCHHCHCHCHHCHCHCHHCHCHCHHCHHCHHCHHCHHCHHCHCHOOH C. OCCH3(CH2)16OCHCH3(CH2)16OCOCH2OCCH3(CH2)16OCH2D. HCCNORHCNC H RHOHCCNORHCNC H RHOHCCNORHCNC H RHOHCCNORHCNC H RHOHCCORCN H RHBiology 12 0608 Form A Page 5 10. Which
10、molecule is produced in the chloroplast during photosynthesis? A. CH2OH O HOHOHHOHHOHHHB. NHHOCCOHHHC. CH3CH3D. P11. Which molecule cannot be digested by humans? A. OCH2OOOOOOOOOOOOOB. OCH2OOOOOOOOOCH2OOOOOOCH2OCH2OOOOOOOOOOOOOOOOC. OOOD. OOOO OOOOOOOPage 6 Biology 12 0608 Form A Use the following d
11、iagram to answer question 12. X12. What type of chemical bond is indicated by X? A. ionic B. peptide C. covalent D. hydrogen _ 13. DNA is a molecule of which of the following? A. ribose B. nucleotides C. amino acids D. nucleic acids 14. Which of the following are characteristics of a DNA molecule? A
12、. single helix, ribose, guanine B. double helix, ribose, adenine C. single helix, deoxyribose, uracil D. double helix, deoxyribose, thymine Biology 12 0608 Form A Page 7 Use the following diagram to answer question 15. WXYZ15. In which step do new bases attach by complementary base pairing? A. W B.
13、X C. Y D. Z _ 16. The sequence of bases in one strand of a DNA molecule is C C G T A C. Which of the following represents the sequence of bases created on this strand during replication? A. C C G T A C B. G G C U T G C. G G C A T G D. G G C A U G 17. What has occurred when the sequence of DNA bases
14、is altered during replication? A. mutation B. translation C. denaturation D. transcription Page 8 Biology 12 0608 Form A 18. Which of the following processes requires ATP? A. osmosis B. protein synthesis C. facilitated transport D. diffusion of oxygen 19. Which of the following examples of complemen
15、tary base pairing occurs during translation? A. mRNA bonds to DNA B. codons bond to codons C. adenine bonds to thymine D. anticodons bond to codons 20. What is a function of tRNA? A. to produce mRNA B. to provide a location for translation C. to carry amino acids to the growing polypeptide chain D.
16、to carry genetic information from the nucleus to the cytoplasm 21. Which of the following is a function of proteins in the cell membrane? A. to provide receptors for specific hormones B. to maintain the fluid nature of the membrane C. to provide a hydrophobic end that repels water D. to provide a channel for fats to move into the cell Biology 12 0608 Form
