09/10bi12 released form a - biology 12€¦ · 2009/10 released exam january 2010 form a ... use...

Contents: 32 pages Examination: 2 hours 67 multiple-choice questions in the Examination Booklet Additional Time Permitted: 60 minutes © Province of British Columbia

Biology 12 Examination Booklet

2009/10 Released Exam January 2010 Form A

DO NOT OPEN ANY EXAMINATION MATERIALS UNTIL INSTRUCTED TO DO SO.

FOR FURTHER INSTRUCTIONS REFER TO THE RESPONSE BOOKLET.

Biology 12 – 1001 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 pencil, 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.

FA B C D E HGExam Booklet Form/Cahier d’examen

1. Hydrogen bonds form between A. oxygen atoms. B. hydrogen atoms. C. water molecules. D. glucose molecules. 2. Which of the following illustrates a polysaccharide? A.

H

OH

C

H

OH

CH

OH

C

OH

H

C

CH2OH

C

H

O

B. N

HC C N

C N CH

HC C

C N CH

H O R H O R

R H O R H O

C.

CH3

CH3

OH

O

D. O

OO

O

OO

O

OOO

O

Biology 12 – 1001 Form A

3. Which of the following is a lipid? A. lipase B. glycerol C. glycogen D. testosterone

Use the following diagram to answer question 4.

Z

V

X

Y

W

4. A component of the structures labelled X is produced at A. V. B. W. C. Y. D. Z.


Use the following table to answer question 5.

DNA base analysis

Base Guanine X Y Z

% of base in sample 22% 28% 22% 28%

5. Which of the following correctly identifies DNA bases X, Y and Z? X Y Z

A. adenine cytosine uracil

B. adenine cytosine thymine

C. cytosine uracil adenine

D. thymine adenine cytosine

6. DNA from different species is joined during A. translation. B. replication. C. transcription. D. recombination. 7. Which of the following occurs during complementary base pairing? A. Bonds form between uracil and thymine. B. Bonds form between cytosine and guanine. C. Bonds break between phosphates and sugars. D. Bonds break between amino acids and phosphates.


8. Which of the following is produced as a result of replication? A. DNA B. protein C. mRNA D. ribosomes


X Y Z

+

9. In which of the following are both helicase and DNA polymerase active? A. X only B. Y only C. Z only D. X and Z

10. When cells are in a hypotonic solution, the concentration of solute in the cells is A. lower than that of the solution. B. higher than that of the solution. C. the same as that of the solution.


11. Which of the following correctly compares a large cell to a smaller cell?

Surface-area-to-volume ratio (compared to a smaller cell)

Efficiency in removing wastes (compared to a smaller cell)

A. greater more

B. greater less

C. smaller more

D. smaller less

Use the following diagram of the cell membrane to answer question 12.

Z

X

W

Y

{

12. Which structure is the fluid component of the fluid-mosaic model? A. W B. X C. Y D. Z


Use the following diagram of the cell membrane for question 13.

X

13. The structure labelled X is A. polar and hydrophilic. B. polar and hydrophobic. C. non-polar and hydrophilic. D. non-polar and hydrophobic.

14. When red blood cells are placed in an isotonic salt solution, they A. swell. B. crenate. C. lose mass. D. remain the same size.


Use the following diagram of a cellular process to answer question 15.

12

3 15. Which of the following is produced as a result of this process? A. ATP B. ADP C. oxygen D. glucose

Use the following graph of an enzyme-catalyzed reaction to answer question 16.

X Y

Rate of Reaction

Time0

16. Which of the following could account for the shape of the graph between time

X and time Y? A. A co-enzyme was added at time X. B. All of the enzymes have been denatured. C. There is a limited amount of enzyme available. D. The substrate has been completely broken down.


17. Heavy metal ions cause the rate of an enzyme-catalyzed reaction to decrease by A. decreasing the activation energy. B. altering the shape of the active site. C. increasing the substrate concentration. D. preventing the substrate from binding with co-enzymes. 18. Which of the following increases the total amount of product formed in an

enzyme-catalyzed reaction? A. maintaining optimum pH B. increasing the activation energy C. increasing the amount of substrate D. increasing the temperature from 20°C to 37°C

Use the following graph to answer question 19.

Rate of reaction

Time

W

X

YZ

Time T

0 19. What graph illustrates the rate of an enzyme-catalyzed reaction occuring in the

stomach if the pH is decreased from pH 6 to pH 2 at Time T? A. W B. X C. Y D. Z


Use the following diagram of an enzyme-catalyzed reaction to answer questions 20 and 21.

Z

⎫ ⎬⎪ ⎭⎪

X ⎫ ⎬⎪ ⎭⎪

Y⎫ ⎬⎪ ⎭⎪

W 20. What is structure Y? A. a product B. a reactant C. an active site D. an enzyme-substrate complex 21. Competitive inhibitors bind to which structure? A. W B. X C. Y D. Z


22. In which structure are vitamins synthesized by bacteria? A.

B.

C.

D.


Use the following diagram of the digestive system to answer question 23.

W

XY

Z

23. The contents of which structure have the highest concentration of hydrogen ions? A. W B. X C. Y D. Z

24. Decreased secretion of insulin results in A. increased production of glycogen in the liver. B. increased concentration of glucose in the blood. C. decreased concentration of protein in the small intestine. D. decreased concentration of sugar molecules in the duodenum.


Use the following molecular diagram to answer question 25.

CCCC

H

C

H

C

H

H

C

H

H

C

H

C

H

C

H

C

OH

O

H

H

H

H

C

H H H

H H H

25. Which of the following catalyzes the reaction that produces this molecule? A. bile B. lipase C. amylase D. peptidase

Use the following diagram illustrating a section of a blood vessel to answer question 26.

26. The vessel shown above is A. a vein. B. a venule. C. an artery. D. a capillary.

27. Which of the following engulf foreign substances in the blood? A. platelets B. antibodies C. red blood cells D. white blood cells


28. Which vessel transports blood between the liver and the posterior vena cava? A. renal artery B. hepatic vein C. mesenteric vein D. hepatic portal vein

Use the following diagram of the heart to answer question 29.

X Y

29. The function of structures X and Y is to A. control the heart rate. B. prevent the backflow of blood. C. prevent the semilunar valves from inverting. D. delay the impulse from the AV node until the atria have contracted.


Use the following diagram of a blood vessel to answer question 30.

30. A function of this type of blood vessel is to carry blood from the A. liver to the heart. B. heart to the lungs. C. fetus to the placenta. D. aorta to the intestines.

Use the following diagram of the circulatory system to answer question 31.

X

31. X indicates a capillary bed in which structure? A. the eye B. the arm C. the lung D. the kidney


Use the following graph to answer question 32.

W X Y Z

Distance from the left ventricle

MagnitudeBlood velocityBlood pressure

Total cross-sectional area

32. Which area of the graph displays the conditions in the iliac artery? A. W B. X C. Y D. Z

33. Excess tissue fluid is reabsorbed by the A. subclavian veins. B. lymph capillaries. C. hepatic portal vein. D. posterior vena cava. 34. Which of the following occurs at the arterial end of a capillary bed in a muscle? A. Plasma proteins enter the tissues. B. Blood pressure forces fluid to enter the tissues. C. Carbon dioxide and glucose enter the bloodstream. D. Osmotic pressure causes water to move into the blood.


Use the following cross section of the heart to answer question 35.

35. After blood is forced in the direction shown by the arrows, what is the next event

in the cardiac cycle? A. closing of the semilunar valves B. generation of a nerve impulse by the sinoatrial (SA) node C. generation of a nerve impulse by the atrioventricular (AV) node D. opening of the atrioventricular (AV) valves by the chordae tendineae

36. Which of the following moves mucus in the respiratory system? A. cilia B. alveoli C. pharynx D. diaphragm 37. During inhalation, air moves from the nose directly into the A. alveoli. B. bronchi. C. pharynx. D. bronchioles.



38. Blood moving away from this structure has a high concentration of A. oxyhemoglobin. B. bicarbonate ions. C. reduced hemoglobin. D. carbaminohemoglobin.

39. Which of the following is not produced as a result of external respiration? A. water B. carbon dioxide C. oxyhemoglobin D. bicarbonate ions 40. If the pleural membranes are punctured, A. the alveoli expand. B. the epiglottis closes. C. a lung may collapse. D. pressure decreases in the thoracic cavity.


Use the following diagram of the respiratory system to answer question 41.

Z

Y

X

W

41. Which structure responds to nervous stimulation from the medulla oblongata? A. W B. X C. Y D. Z



In

Out

W

X

Y Z

42. Where is the concentration of reduced hemoglobin the greatest? A. W B. X C. Y D. Z

43. Which structure is located completely within the central nervous system? A. the thalamus B. a motor neuron C. a sensory neuron D. a sensory receptor



X

44. X indicates A. cell bodies. B. synaptic clefts. C. Schwann cells. D. sensory neurons.


Use the following diagram of the brain to answer questions 45 and 46.

WY

Z

X

V

45. What structure is responsible for skeletal muscle coordination? A. V B. X C. Y D. Z 46. Secretions produced by structure W cause which of the following to be released? A. insulin B. follicle-stimulating hormone (FSH) C. human chorionic gonadotropin (HCG) D. gonadotropin-releasing hormone (GnRH)


Use the following diagram of a reflex arc to answer question 47.

⎧⎨ ⎪⎪⎪⎪⎪⎩ ⎪⎪⎪⎪⎪ X

47. What structures are included in X? A. a motor neuron and receptors B. a motor neuron and an effector C. receptors and a sensory neuron D. an interneuron and a sensory neuron

48. What is an effect of the secretion of epinephrine (adrenaline)? A. decreased breathing rate B. slowing of the heartbeat C. slower rate of peristalsis D. constriction of the pupils



X

49. What occurs at X when the threshold level has been reached? A. Acetylcholine is released. B. Neurotransmitters are absorbed. C. The membrane becomes permeable to sodium ions. D. The membrane becomes permeable to calcium ions.

Use the following graph of an action potential to answer question 50.

Membrane potential(millivolts)

Time(milliseconds)

–65

0

+40

X Y

50. Which of the following occurs in the neuron between times X and Y? A. The concentration of sodium ions in the cytoplasm increases. B. The concentration of potassium ions in the cytoplasm increases. C. The concentration of sodium ions surrounding the axon increases. D. The concentration of potassium ions surrounding the axon increases.


Use the following graph of an action potential to answer question 51.

Membrane potential(millivolts)

Time(milliseconds)

–65

0

+40

WV YX Z

51. When does repolarization occur? A. between V and W B. between W and X C. between X and Y D. between Y and Z



W

XY

Z

52. What structure secretes a hormone that initiates the “fight or flight” response? A. W B. X C. Y D. Z

53. What structure carries both urine and semen? A. the ureter B. the urethra C. the vas deferens D. the collecting duct



XY

Z

W 54. Which letter indicates the renal medulla? A. W B. X C. Y D. Z


W

X

Y

Z

55. What part of the nephron is most affected by hypertension? A. W B. X C. Y D. Z


Use the following diagram of the brain to answer question 56.

X

56. Which part of the nephron is affected by a hormone synthesized at X? A. the glomerulus B. the loop of Henle C. the collecting duct D. the proximal convoluted tubule

57. Aldosterone increases blood pressure by causing A. the excretion of potassium ions. B. increased reabsorption of sodium ions. C. the excretion of water at the distal convoluted tubule. D. increased permeability of the collecting duct to water.

58. What structure adds secretions to seminal fluid? A. the urethra B. the prostate C. the epididymis D. the vas deferens


Use the following diagram of a cross section of a testicle to answer question 59.

X

W Z

Y

59. Where do sperm become mature? A. W B. X C. Y D. Z

Use the following diagram of the male reproductive system to answer question 60.

X

W

Z

Y

60. Secretions from what structure cause the onset of beard growth and other

characteristics of puberty? A. W B. X C. Y D. Z


Use the following diagram of the female reproductive system to answer question 61.

Z

YW

X

61. Which letter indicates the oviduct? A. W B. X C. Y D. Z

62. Which of the following produces a hormone that results in breast development? A. the uterus B. the ovaries C. the adrenal cortex D. the posterior pituitary 63. Which of the following correctly matches a gland with its secretion?

Gland Secretion

A. ovaries GnRH

B. testes luteinizing hormone

C. Cowper’s gland testosterone

D. anterior pituitary follicle-stimulating hormone


64. What results from a decrease in the secretion of gonadotropic-releasing hormone (GnRH)? A. The uterine glands will produce less mucus. B. The endometrium becomes glandular and secretory. C. The follicle will secrete follicle-stimulating hormone (FSH). D. The corpus luteum decreases human chorionic gonadotropin (HCG) secretion.

Use the following graph of the hormones of the menstrual cycle to answer question 65.

Day1 14 287 21

Relative levels of hormones

X

65. Line X represents the concentration of which hormone in the blood? A. progesterone B. luteinizing hormone (LH) C. follicle-stimulating hormone (FSH) D. human chorionic gonadotropin (HCG)


Use the following diagram of hormone levels during pregnancy to answer question 66.

Increasing hormone

concentration

Months of pregnancy

0 1 32 4 5 6 7 8 9

X

66. The function of the hormone labelled X is to A. maintain the corpus luteum. B. cause the secretion of oxytocin. C. cause maturation of a new follicle. D. increase the level of follicle-stimulating hormone (FSH).


Use the following diagram of the female reproductive system to answer question 67.

W

XYZ

67. The stimulation of which structure results in the release of oxytocin during labour? A. W B. X C. Y D. Z You have Examination Booklet Form A. In the box above #1 on your Answer Sheet,

ensure you filled in the bubble as follows.

FA B C D E HGExam Booklet Form/Cahier d’examen

This is the end of the multiple-choice section. Answer the written-response questions in the Response Booklet.

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Question 6

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Question 5

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Question 3

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Question 2

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Question 1

Version 200810.1

D E F G HA B CExam Booklet Form/Cahier d examen,

31719

Student Instructions

1. PlaceyourPersonalEducationNumber(PEN)labelatthetopofthisBookletANDfillinthebubble(FormA,B,C,D,E,F,GorH)thatcorrespondstotheletteronyourExaminationBooklet.

2. UseapenciltofillinbubbleswhenansweringquestionsonyourAnswerSheet.

3. Useablue-orblack-inkpenwhenansweringwritten-responsequestionsinthisBooklet.

4. ReadtheExaminationRulesonthebackofthisBooklet.

Course Code = BI 12

Biology 122009/10 Released Exam

January 2010

Response Booklet

Course Code = BI 2009/10 Released Exam January 2010

MINISTRY USE ONLYMINISTRY USE ONLY

12

MINISTRY USE ONLY

Examination Rules

1.Thetimeallottedforthisexaminationistwohours.Youmay,however,takeupto60minutesofadditionaltimetofinish.

2.AnswersenteredintheExaminationBookletwillnotbemarked.

3.Cheatingonanexaminationwillresultinamarkofzero.TheMinistryofEducationconsiderscheatingtohaveoccurredifstudentsbreakanyofthefollowingrules:

• Studentsmustnotbeinpossessionoforhaveusedanysecureexaminationmaterialspriortotheexaminationsession.

• Studentsmustnotcommunicatewithotherstudentsduringtheexamination.

• Studentsmustnotgiveorreceiveassistanceofanykindinansweringanexaminationquestionduringanexamination,includingallowingtheirpapertobeviewedbyothersorcopyinganswersfromanotherstudent’spaper.

• Studentsmustnotpossessanybook,paperoritemthatmightassistinwritinganexamination,includingadictionaryorpieceofelectronicequipment,thatisnotspecificallyauthorizedfortheexaminationbyministrypolicy.

• Studentsmustnotcopy,plagiarizeorpresentastheirown,workdonebyanyotherperson.

• Studentsmustimmediatelyfollowtheinvigilator’sordertostopwritingattheendoftheexaminationtimeandmustnotalteranExaminationBooklet,ResponseBookletorAnswerSheetaftertheinvigilatorhasaskedstudentstohandinexaminationpapers.

• Studentsmustnotremoveanypieceoftheexaminationmaterialsfromtheexaminationroom,includingworkpages.

4.Theuseofinappropriatelanguageorcontentmayresultinamarkofzerobeingawarded.

5.Uponcompletionoftheexamination,returnallexaminationmaterialstothesupervisinginvigilator.

© Province of British Columbia

PlacePersonalEducationNumber(PEN)here. PlacePersonalEducationNumber(PEN)here.

Biology 12 – 1001 Response Booklet Page 1

PART B: WRITTEN RESPONSE

Value: 23 marks Suggested Time: 40 minutes

INSTRUCTIONS: 1. Answer the following questions in the space provided in this Response Booklet.

2. Use a pen for this part of the examination unless otherwise instructed.

3. You may not need all of the space provided to answer each question.


Organelle 1 Organelle 2

1. Identify organelles 1 and 2 and compare their functions in at least two ways.

(4 marks)

Biology 12 – 1001 Response Booklet

2. Explain how the structure of water molecules allow this substance to be an effective temperature regulator. Give an example of this regulation in the human body. (3 marks)


3. Describe the process of translation. (4 marks)


4. Explain how the liver, gall bladder and pancreas work together during digestion. (5 marks)


5. Explain how the nervous system lowers blood pressure after a “fight or flight” response. (3 marks)


6. Explain how the consumption of alcohol and the resulting decrease in the secretion of anti-diuretic hormone (ADH) affects both blood pressure and thirst. (4 marks)

NR3210

Question 6

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Question 5

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Question 4

NR43210

Question 3

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3210

Question 2

NR43210

Question 1

Version 200810.1

D E F G HA B CExam Booklet Form/Cahier d examen,

31719

Student Instructions

1. PlaceyourPersonalEducationNumber(PEN)labelatthetopofthisBookletANDfillinthebubble(FormA,B,C,D,E,F,GorH)thatcorrespondstotheletteronyourExaminationBooklet.

2. UseapenciltofillinbubbleswhenansweringquestionsonyourAnswerSheet.

3. Useablue-orblack-inkpenwhenansweringwritten-responsequestionsinthisBooklet.

4. ReadtheExaminationRulesonthebackofthisBooklet.

Course Code = BI 12

Biology 122009/10 Released Exam

January 2010

Response Booklet

Course Code = BI 2009/10 Released Exam January 2010

MINISTRY USE ONLYMINISTRY USE ONLY

12

MINISTRY USE ONLY

Examination Rules

1.Thetimeallottedforthisexaminationistwohours.Youmay,however,takeupto60minutesofadditionaltimetofinish.

2.AnswersenteredintheExaminationBookletwillnotbemarked.

3.Cheatingonanexaminationwillresultinamarkofzero.TheMinistryofEducationconsiderscheatingtohaveoccurredifstudentsbreakanyofthefollowingrules:

• Studentsmustnotbeinpossessionoforhaveusedanysecureexaminationmaterialspriortotheexaminationsession.

• Studentsmustnotcommunicatewithotherstudentsduringtheexamination.

• Studentsmustnotgiveorreceiveassistanceofanykindinansweringanexaminationquestionduringanexamination,includingallowingtheirpapertobeviewedbyothersorcopyinganswersfromanotherstudent’spaper.

• Studentsmustnotpossessanybook,paperoritemthatmightassistinwritinganexamination,includingadictionaryorpieceofelectronicequipment,thatisnotspecificallyauthorizedfortheexaminationbyministrypolicy.

• Studentsmustnotcopy,plagiarizeorpresentastheirown,workdonebyanyotherperson.

• Studentsmustimmediatelyfollowtheinvigilator’sordertostopwritingattheendoftheexaminationtimeandmustnotalteranExaminationBooklet,ResponseBookletorAnswerSheetaftertheinvigilatorhasaskedstudentstohandinexaminationpapers.

• Studentsmustnotremoveanypieceoftheexaminationmaterialsfromtheexaminationroom,includingworkpages.

4.Theuseofinappropriatelanguageorcontentmayresultinamarkofzerobeingawarded.

5.Uponcompletionoftheexamination,returnallexaminationmaterialstothesupervisinginvigilator.

© Province of British Columbia

PlacePersonalEducationNumber(PEN)here. PlacePersonalEducationNumber(PEN)here.

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