January Science 30. Part B: Machine Scored Grade 12 Diploma Examination

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January 2009 Science 30 Part B: Machine Scored Grade 12 Diploma Examination Copyright 2009, the Crown in Right of Alberta, as represented by the Minister of Education, Alberta Education, Learner Assessment,
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January 2009 Science 30 Part B: Machine Scored Grade 12 Diploma Examination Copyright 2009, the Crown in Right of Alberta, as represented by the Minister of Education, Alberta Education, Learner Assessment, 44 Capital Boulevard, Street NW, Edmonton, Alberta T5J 5E6, and its licensors. All rights reserved. Duplication of this examination in any manner or its use for purposes other than those authorized and scheduled by Alberta Education is strictly prohibited. January 2009 Science 30 Part B: Machine Scored Grade 12 Diploma Examination Description Time: 2 hours. This closed-book examination was developed to be completed in 2 h; however, you may take an additional 0.5 h to complete the examination. Part B: Machine Scored consists of 40 multiple-choice and 12 numericalresponse questions, of equal value, worth 65% of the total Science 30 Diploma Examination mark. This examination contains sets of related questions. A set of questions may contain multiple-choice and/or numerical-response questions. A science data booklet is provided for your reference. Note: The perforated pages at the back of this booklet may be torn out and used for your rough work. No marks will be given for work done on the tear-out pages. Instructions Turn to the last page of the examination booklet. Carefully fold and tear out the machine-scored answer sheet along the perforation. Use only an HB pencil for the answer sheet. Fill in the information on the back cover of the examination booklet and the answer sheet as directed by the presiding examiner. You are expected to provide your own calculator. You may use any scientific calculator or a graphing calculator approved by Alberta Education. You must have cleared your calculator of all information that is stored in the programmable or parametric memory. You may use a ruler and a protractor. Read each question carefully. Consider all numbers used in the examination to be the result of a measurement or an observation. When performing calculations, use the values of the constants provided in the data booklet. If you wish to change an answer, erase all traces of your first answer. Do not fold the answer sheet. The presiding examiner will collect your answer sheet and examination booklet and send them to Alberta Education. Now turn this page and read the detailed instructions for answering machinescored questions. Multiple Choice Decide which of the choices best completes the statement or answers the question. Locate that question number on the separate answer sheet provided and fill in the circle that corresponds to your choice. Example This examination is for the subject of A. chemistry B. biology C. physics D. science Answer Sheet Numerical Response Record your answer on the answer sheet provided by writing it in the boxes and then filling in the corresponding circles. If an answer is a value between 0 and 1 (e.g., 0.25), then be sure to record the 0 before the decimal place. Enter the first digit of your answer in the left-hand box. Any boxes on the right that are not needed are to remain blank. Examples Calculation Question and Solution The average of the values 21.0, 25.5, and 24.5 is. (Record your three-digit answer in the numericalresponse section on the answer sheet.) Average = ( )/3 = = 23.7 (rounded to one decimal place) Record 23.7 on the answer sheet ii Correct-Order Question and Solution Four Subjects 1 Physics 2 Biology 3 Science 4 Chemistry When the subjects above are arranged in alphabetical order, their order is,,, and. (Record all four digits of your answer in the numerical-response section on the answer sheet.) Answer: 2413 Scientific Notation Question and Solution The speed of light is a.bc 10 d m/s. The values of a, b, c, and d are,,, and. a b c d (Record all four digits of your answer in the numerical-response section on the answer sheet.) Answer: c = m/s iii Technology has increased knowledge about diseases and their effects on the human body. Use the following information to answer the first three questions. Huntington disease (HD) is a lethal human disorder caused by a dominant allele, H, located on the end of chromosome 4. This allele is autosomal (not sex-linked). Some Pedigrees for Huntington Disease Pedigree 1 Pedigree 2 I Parents I Parents II Children II Children Pedigree 3 Pedigree 4 I Parents I Parents II Children II Children H = Huntington disease h = Unaffected Numerical Response 1. Match each of the pedigrees numbered above with the genotypes of the parents, as listed below. Genotypes of parents hh hh (Record in the first column) hh Hh (Record in the second column) Hh Hh (Record in the third column) HH Hh (Record in the fourth column) (Record your answer in the numerical-response section on the answer sheet.) 1 Use the following additional information to answer the next two questions. One parent is heterozygous and the other is homozygous dominant for the Huntington allele. 1. The possible genotypes of children born to the parents described above are A. Hh and hh only B. HH and Hh only C. HH and hh only D. HH, Hh, and hh 2. The probability that the first child of the parents described above will receive the dominant allele is A. 25% B. 50% C. 75% D. 100% 2 Use the following information to answer the next question. A variety of cell processes occur during growth and reproduction. Some Cell Processes 1 Meiosis 2 Mitosis 3 Fertilization Numerical Response DP- 2. Match the cell processes numbered above with the descriptions of processes given below. (Processes may be used more than once.) Process: Description: Forms gametes Combines genetic information from two parents Responsible for growth and development Divides genetic information into half the original amount (Record all four digits of your answer in the numerical-response section on the answer sheet.) 3 Use the following information to answer the next question. A Random Display of the Stages of Mitosis 3. Cells in an implanted embryo undergo the process of mitosis as the embryo develops. The correct order for the stages of mitosis shown above is A. I, II, III, IV B. I, III, IV, II C. III, I, II, IV D. III, I, IV, II 4. The symptoms of many lethal diseases appear before a person who has the disease reaches adulthood. A likely explanation for why dominant lethal alleles rarely occur in populations is that many individuals who have a dominant lethal allele A. pass on only the lethal allele to their offspring B. pass on only the non-lethal allele to their offspring C. do not survive to reproduce, so the lethal allele is not passed on D. do not survive to reproduce, so the non-lethal allele is not passed on 4 Use the following information to answer the next two questions. Carbon monoxide prevents oxygen from binding to the molecule that is responsible for transporting oxygen in the bloodstream. 5. Which of the following molecules is responsible for transporting oxygen in the bloodstream? A. Adenine B. An antibody C. Hemoglobin D. Deoxyribose 6. A person suffering from carbon monoxide poisoning experiences A. a decrease in the rate of oxygen exchange in the arteries of the brain B. an increase in the rate of oxygen exchange in the arteries of the brain C. a decrease in the rate of oxygen exchange in the capillaries of the brain D. an increase in the rate of oxygen exchange in the capillaries of the brain Use the following information to answer the next question. Some Structures of the Circulatory System 1 Vein 2 Artery 3 Lung capillary 4 Right ventricle Numerical Response 3. Blood containing carbon monoxide exits the right atrium of the heart. The order in which this blood passes through the structures of the circulatory system numbered above is,,, and. (Record all four digits of your answer in the numerical-response section on the answer sheet.) 5 7. A person has a blood pressure of 145/95. The number 145 represents the A. systolic pressure, which occurs when the ventricles relax B. diastolic pressure, which occurs when the ventricles relax C. systolic pressure, which occurs when the ventricles contract D. diastolic pressure, which occurs when the ventricles contract 8. Which of the following blood components is involved in stopping a nosebleed? A. Platelets B. Antibodies C. Red blood cells D. White blood cells Use the following information to answer the next question. The drug erythropoietin (EPO) is an artificial version of a protein that is naturally produced by the kidneys. EPO is administered to individuals to increase their production of cells that carry oxygen in the blood. Two of the consecutive amino acids in the EPO protein are serine and phenylalanine. 9. The sequence of DNA base triplets that code for the amino acid sequence described above is A. AGC TTC B. TCT CCC C. TCG CCG D. AGC CGT 6 10. Biotechnologists use a variety of genetic procedures. Which of the following rows describes the procedures of cloning, gene splicing, and gene mapping? Row Cloning Gene Splicing Gene Mapping A. Nucleus of a body cell implanted into an egg B. Section of foreign DNA inserted into the DNA of an organism C. Identification of genes on the chromosomes of an organism DNA sequence added to the cells of an organism Identification of genes on the chromosomes of an organism D. Picture of chromosomes Nucleus of a body cell implanted into an egg Identification of genes on the chromosomes of an organism Picture of chromosomes Picture of chromosomes Nucleus of a body cell implanted into an egg DNA sequence added to the cells of an organism 11. In the search for a cure for cystic fibrosis, researchers use viruses to carry normal genes into the airway of an individual who has cystic fibrosis. This technique is referred to as A. mitosis B. trisomy C. gene therapy D. nondisjunction 7 Use the following information to answer the next question. X-ray machines and magnetic resonance imaging (MRI) machines produce electric and magnetic fields. Some Electric and Magnetic Fields Numerical Response 4. Match each of the numbers in the diagrams above with the corresponding descriptor listed below. South pole (Record in the first column) Negatively charged particle (Record in the second column) North pole (Record in the third column) Positively charged particle (Record in the fourth column) (Record your answer in the numerical-response section on the answer sheet.) 8 Use the following information to answer the next question. Electromagnetic radiation (EMR) is often used in the diagnosis and treatment of disease. Understanding the properties of EMR is important to ensure that it is used properly. Technology Type of EMR Medical Application 1 Fibre optics 5 Gamma 11 Tracking blood flow 2 Magnetic resonance imaging (MRI) 3 Emission tomography (PET and SPECT) 6 Infrared 12 Performing endoscopic surgery 7 Radio 13 Soft tissue imaging 4 Thermogram 8 Visible light 14 Showing temperature distribution in tissues Numerical Response 5. Match the number of one technology from the table above with the number of the type of EMR associated with that technology and with the number of the medical application associated with that technology. (There is more than one correct combination of numbers.) Technology (Record in the first column) Type of EMR (Record in the second column) Medical application (Record in the third and fourth columns) (Record your answer in the numerical-response section on the answer sheet.) 9 12. If the following types of EMR have equal intensities, then the type of EMR with the greatest energy is A. radio B. gamma C. infrared D. visible light Use the following information to answer the next question. In ultrasound technology, sound waves with a frequency of Hz and a wavelength of m pass through the body. Reflected waves are analyzed by a computer to produce an image. 13. The speed of the sound waves passing through the body is A m/s B m/s C m/s D m/s 10 Many farmers use practices designed to minimize negative environmental impact. Use the following information to answer the next question. A window in a farmhouse provides passive solar heating. Sunlight Striking Glass Sunlight I II Air III Glass Air IV 14. In the diagram above, the light ray that has been reflected is A. I B. II C. III D. IV 11 15. Which of the following diagrams represents the circuit with the least total resistance? 12 Use the following information to answer the next question. A new window is designed to control the quantity of light energy that enters a room by using a film layer containing crystals that respond to an electric current. 16. The magnitude of the resistance in the electric circuit that is used to control the quantity of light energy that passes through the window is A. 24 Ω B. 12 Ω C Ω D Ω 13 Use the following information to answer the next question. Combustion of Butane C 4 H 10 (g) O 2 (g) 4 CO 2 (g) + 5 H 2 O(g) Numerical Response 6. Farmers sometimes use butane torches to solder electric circuits. For each mole of butane combusted, the energy released by the torch is 10 3 kj. (Record your three-digit answer in the numerical-response section on the answer sheet.) 17. The current flowing through a W water pump that is plugged into a 110 V electrical outlet is A A B A C A D A Numerical Response 7. Backup power for a farm is provided by a V distribution line. The primary coil of the transformer has turns. The number of turns that the secondary coil must have in order to deliver 240 V to the farm is turns. (Record your three-digit answer in the numerical-response section on the answer sheet.) 14 18. Traditionally, barns have been painted with a red paint that gets its pigment from rusted scrap metal. Which of the following wavelengths of light is reflected by this pigment? A. 700 nm B. 600 nm C. 500 nm D. 400 nm 19. To better manage resources, farmers often recycle water. The ph of a particular farmer s water changes from 6.6 to 5.6 after it has been recycled, which means that the hydronium ion concentration, [H 3 O + (aq)], increases A. 0.1 times B. 1.0 times C. 10 times D. 100 times Use the following information to answer the next question. A different indicator is added to each of four different samples of recycled water with a ph of 5.6. Colours of Resulting Solutions 1 Colourless 2 Yellow 3 Blue Numerical Response 8. Match the colours of the resulting solutions listed above with the indicators listed below. (You may use a number more than once.) Methyl violet (Record in the first column) Bromothymol blue (Record in the second column) Bromocresol green (Record in the third column) Phenolphthalein (Record in the fourth column) (Record your answer in the numerical-response section on the answer sheet.) 15 Use the following information to answer the next question. A titration is performed in order to find the hydronium ion concentration [H 3 O + (aq)] of an acidic sample solution. Titration Steps 1 Record the total volume of NaOH(aq) solution used to turn the sample solution green. 2 Place 10.0 ml of the acidic sample solution into a flask and add three drops of bromothymol blue. 3 Slowly drip the 0.10 mol/l NaOH(aq) solution from a burette into the flask. 4 Calculate the concentration of the acid. Numerical Response 9. When the titration steps given above are listed in the order in which they are performed, their order is,,, and. first last (Record all four digits of your answer in the numerical-response section on the answer sheet.) 16 Use the following information to answer the next question. To determine the effect of acid rain on corn plants, a solution of H 2 SO 4 (aq) with a ph of 4.3 was used to water a plot of two-month-old corn plants. More corn plants were grown on another plot under similar conditions but were watered with distilled water that had a ph of 7. Experimental Variables 1 Type of soil 2 Substance used to water plants 3 Amount of light 4 Growth of plant Numerical Response 10. Match each of the experimental conditions numbered above with one of the variables given below. Conditions: Variables: Manipulated Responding Controlled Controlled variable variable variable variable (Record all four digits of your answer in the numerical-response section on the answer sheet.) Use the following information to answer the next question. A farmer s well water has a ph between 7.6 and 8.4, depending on the season. 20. The ph of the farmer s well water is best described as A. very basic B. very acidic C. slightly basic D. slightly acidic 17 Use the following information to answer the next question. A farmer adds a borax solution with a ph of 9.50 to his laundry to improve the performance of the detergent he uses. 21. Borax is i solution with a hydronium ion concentration [H 3 O + aq] of ii mol/l. The statement above is completed by the information in row Row i ii A. a basic 0.98 B. an acidic 0.98 C. a basic D. an acidic Use the following information to answer the next question. Some of the substances shown in the equations below are present in the water that a farmer has recycled. 1 SO 2 (g) + 2 H 2 O(l) HSO 3 (aq) + H 3 O + (aq) 2 H 2 S(g) H 2 S(aq) 3 H 2 SO 4 (aq) + H 2 O(l) HSO 4 (aq) + H 3 O + (aq) 4 HCO 3 (aq) + H 3 O + (aq) H 2 CO 3 (aq) + H 2 O(l) 22. Which of the following pairs of substances from the equations above represents a proton donor and a proton acceptor, respectively? A. H 2 O(l) and SO 2 (g) B. H 2 S(g) and H 2 S(aq) C. H 2 SO 4 (aq) and H 3 O + (aq) D. H 2 CO 3 (aq) and HCO 3 (aq) 18 23. The major environmental issue associated with nitrogen compounds produced by hot internal-combustion engines is A. acid deposition B. global warming C. ultraviolet ray blockage D. biomagnification in food chains Use the following information to answer the next question. A farmer takes old transformers to a recycling facility to prevent wastes such as PCBs from leaching into waterways. 24. PCBs tend to become more concentrated in the tissue of predators such as hawks than in the hawks environment because of A. biomagnification B. biodegradation C. bioreplication D. biodeposition 25. Which of the following structural formulas represents a compound that is responsible for the depletion of the ozone layer? 19 26. To ease the pain in sore muscles, a farmer uses a wintergreen-scented balm. Scents such as wintergreen are composed of organic compounds that are classified as A. esters B. halides C. carboxylic acids D. halogenated hydrocarbons Use the following information to answer the next question. A farmer uses a sunscreen that contains para-amino benzoic acid (PABA). Absorption Spectrum of PABA Relative degree of absorption Absorption by PABA Wavelength (nm) 27. The PABA in the sunscreen absorbs radiation that has a frequency of approximately A Hz B. 80 Hz C Hz D Hz 20 28. A bee stings a farmer, injecting methanoic acid into the farmer s skin. Which of the following structural formulas represents methanoic acid? 21 Space science may have an increasing role in shaping future societies, including the development of technologies to produce energy. Use the following information to answer the next three questions. One futuristic scheme to produce power on a large scale proposes placing giant solar panels into Earth s orbit, where energy generated from sunlight would be converted to microwaves and beamed to antennas on Earth for reconversion to electric power. To produce as much power as five large nuclear power plants ( W total), several square kilometres of solar panels would have to be assembled in orbit. An Earth-based antenna that is eight kilometres in diameter would be required to receive microwaves from the solar modules, which would be positioned m away from Earth s centre. Numerical Response 11. The magnitude of Earth s gravitational field at the location of the orbiting solar panels is N/kg. (Record your three-digit answer in the numerical-response section on the answer sheet.) 29. The energy that the solar panels could produce in one day is A J B J C J D J 30. The direction of Earth s gravitational field at the position of the orbiting solar panels
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