1 ! "#$%&'()*+! SM POI LAM (SUWA) IPOH MID YEAR EXAMINATION 2022 BIOLOGY PAPER 2 DATE: 12.05.2022 TIME: 1145-1230 (45 minutes) Name: ________________________ Reg no: ______________ Class: S1ZI ___________________________________________________________________________ READ THESE INSTRUCTIONS FIRST 1. Please answer all questions. 2. This paper consists of 40 multiple choice questions. 3. Please answer in OMR sheet provided. 4. The total mark of this paper is 40%. This paper consists of 13 printed pages. Prepared by ： ……………………… (MS. WONG YAO WEN) Checked by： ………………… (MR. LOKE WAI CHUAN) Do not turn this page unless you are told to do so.
2 1. Which structure is at a different level of organisation from the other three? A. kidney B. liver C. neurone D. testis 2. Which diagram shows one organ only? 3. Which features are characteristics of all arthropods? A. Jointed legs and segmented body B. Jointed legs and thorax C. Segmented body and wings D. Thorax and wings 4. A protease is added to a suspension of egg protein in a test-tube and kept at 37 °C. After 8 minutes, the protein changes from cloudy to transparent. Which product, or products, will now be present in the test-tube? A. amino acids B. a simple sugar C. fatty acids and glycerol D. water 5. In which order does water pass through these structures in a plant A. mesophyll → root hair → xylem B. mesophyll → xylem → root hair C. root hair → mesophyll → xylem D. root hair → xylem → mesophyll
3 6. The diagram shows the stem of a plant. A strip of the outer tissue including the phloem has been removed. How is transport in the plant affected? A. Amino acids and sucrose cannot pass to the roots. B. Dissolved salts cannot pass to the leaves. C. Water cannot pass to the leaves. D. Water cannot pass to the roots 7. The diagram shows someone blowing up a balloon. What percentage of the gas in the balloon is carbon dioxide? A. 0.04% B. 0.4% C. 4.0% D. 40% 8. The diagram shows apparatus used to investigate anaerobic respiration in yeast. What happens to the coloured liquid? A. moves rapidly to the left B. moves slowly to the left C. moves to the right D. stays still
4 9. The list shows four metabolic processes. Which of these processes occur in muscles? A. 1 and 2 B. 2 and 3 C. 3 and 4 D. 4 and 1 10. The diagram shows an experiment to investigate the respiration of yeast. Which gas is evolved and which new compound is present after 24 hours? Gas evolved New compound A Carbon dioxide Ethanol B Carbon dioxide Lactic acid C Oxygen Ethanol D Oxygen Lactic acid 11. An athlete takes part in a race. The graph shows her breathing rate before, during and after the race. At which point does her body contain the greatest amount of lactic acid?
5 12. An experiment is set up to investigate the uptake of oxygen by germinating seeds. What happens to the levels at X and Y? X Y A Falls Rises B Falls Unchanged C Rises Falls D Rises Unchanged 13. The diagram shows the composition of four samples of air (O2 = oxygen, CO2 = carbon dioxide, N2 = nitrogen). Which sample is inspired air and which sample is expired air? Inspired air Expired air A K N B L K C M L D N M
6 14. The diagram shows some of the structures in a human lung. Where is the carbon dioxide concentration highest? 15. The graph shows changes in the volume of air in the lungs of a person at rest, over a period of 30 seconds. Which graph shows changes in the volume of air in the lungs of the same person immediately after they have done five minutes of vigorous exercise?
7 16. The diagram shows some ciliated cells from the trachea. What is the function of the parts labelled X? A. detecting stimuli B. exchanging gases C. moving mucus D. trapping bacteria 17. The diagram shows changes in air pressure inside the lungs during a complete cycle of breathing. Atmospheric pressure is 101 kPa. Which position on the graph marks the point at which the ribs are beginning to be raised? 18. The immune system recognises the pathogens and attacks them. Which features of the pathogens trigger this responses? A. Antigens B. Antibiotics C. Antibodies D. Memory cell
8 19. There are numerous ways for a person to acquire active antibodies. Some of these are: I. Vaccination II. Infection by disease III. Mother’s breastmilk Which of the above provide active immunity? A. I, II B. I, II, III C. I, III D. II, III 20. Which row of the table below correctly describes the attributes of passive immunity? Effective periods Antibodies made Production of memory cells A Long term Yes No B Long term Yes Yes C Short term No No D Short term No Yes 21. When a tissue is transplanted from a female donor to a male recipient, it may be rejected. What is the main cause of this rejection? A. The presence of X chromosome B. The action of platelets C. The action of antibiotics D. Production of antibodies 22. The diagram shows part of the human circulatory system. Which part carries oxygenated blood at low pressure?
9 23. The diagram shows an external view of the human heart. What is the name of the blood vessel labelled X? A. coronary artery B. hepatic artery C. pulmonary artery D. renal artery 24. The diagram shows a double circulatory system. Which two vessels carry blood at the highest pressure? A. 1 and 2 B. 1 and 4 C. 2 and 3 D. 2 and 4 25. What describes the aortic (semi-lunar) and bicuspid (mitral) heart valves when the left ventricle is relaxing? Aortic valve Bicuspid valve A Closed Closed B Closed Open C Open Closed D Open Open
10 26. Which statements about plant transpiration are correct? 27. Translocation occurs in phloem tubes. Aphids feed on the contents of phloem tubes. What type of food would be lacking in their diet? A. amino acid B. fat C. sucrose D. water 28. What could increase the rate of water uptake by a shoot? A. covering the shoot with a black plastic bag B. covering the shoot with a clear plastic bag C. removing the leaves from the shoot D. shining a bright light onto the shoot 29. The diagram shows the human alimentary canal, with a string marked in metres beside it. How long is the small intestine? A. 2m B. 6m C. 8m D. 9m
11 30. The diagram shows part of the digestive system. What is a function of the liquid produced by part 1 and released into part 2? A. to digest proteins to amino acids B. to increase the surface area of fat droplets C. to acidify the contents of part 2 D. to prevent further digestion of starch 31. A child decided to eat only meat, oily fish, cheese and bread, and drink only water. Which nutrient would be in low levels in this diet? A. calcium B. iron C. vitamin C D. vitamin D 32. A person ate food X. Food X was not affected by enzymes until it reached the duodenum. What was in food X? A. Fat B. mineral ion C. protein D. starch 33. An experiment was done using the apparatus shown in the diagram. The carbon dioxide content of the water in each tube was measured at the start and again three hours later. In which tube would there be a decrease in carbon dioxide content?
12 34. An enzyme from the stomach that digests protein, and cooked egg white that contains protein, are placed in four test-tubes. When the egg white is digested the mixture becomes clear. Which tube becomes clear first? 35. An experiment is set up as shown. What is the colour of the starch and water mixture after 30 minutes? A. blue-black B. orange C. white D. yellow-brown 36. Which process occurs by osmosis? A. plant roots absorbing mineral ions from the soil B. plant roots absorbing water from the soil C. the small intestine absorbing fatty acids into the blood D. the small intestine absorbing glucose into the blood 37. Nutrients are made up of smaller basic units. Nutrients can be identified by food tests. Which nutrient is a protein?
13 38. Phloem is an example of A. a cell. B. a tissue. C. an organ. D. an organ system. 39. Which row shows the structures present in plant and animal cells? 40. The cell shown in the diagram has been magnified 3000 times. The diagram is 21 mm wide. What is the actual diameter of the cell?
