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PRESENTATION BROTHERS’ COLLEGE FORM 5 HUMAN AND SOCIAL BIOLOGY “DIAGNOSTIC” TEST Answer all of the following questions by selecting the BEST answer. Write the LETTER of your choice on your answer sheet. DO NOT write on this paper. 1. Animal cells are enclosed by a. A cell wall b. A permeable membrane c. A partially permeable membrane d. A cellulose membrane Items 2 and 3 refer to the following diagrams of specialized cells in the body. 2. Which cell impulses? transmits 3. Which cell is reproductive cell? the 7. In which two body organs does reabsorption of water take place? a. Colon and kidneys b. Kidneys and liver c. Liver and duodenum d. Duodenum and colon 8. The diagram shows the structure of a villus in the small intestine. The arrows so the direction of flow of fluids. After a meal of fried chicken, where will fatty acids and glycerol be present in the largest amount? nerve male Items 4 and 5 refer to the following section of the carbon cycle. 9. Lipase solution was added to milk. After 30 minutes, the milk had become more acidic. What were the substrate and product in this reaction? Substrate Product a. fats amino acids b. fats fatty acids c. proteins amino acids d. proteins fatty acids 4. Which process occurs at I? a. Photosynthesis b. Respiration c. Feeding d. Excretion 5. Respiration occurs only at a. I only b. II only c. II and III only d. II and IV only 6. Which chemical change takes place in green plants, but not in mammals? a. Glucose cellulose b. Glucose glycogen c. Glycogen glucose d. Starch glucose 10. Which secretion, released into the alimentary canal, contains no enzymes but speeds up fat digestion? a. Bile b. Intestinal juice c. Mucus d. Pancreatic juice 16. Which diagram shows how light from a distant object falls on the back of the eye to form a clear image? 11. The diagram below shows the digestive system of a typical mammal. Which structure is the ileum? 12. The diagram below shows a section through a human eye. Which structure contains muscle fibres that contract in response to sudden changes in light intensity? 17. The four structures listed are part of the human excretory system. 1. bladder 2. kidney 3. ureter 4. urethra In which order does a molecule of urea pass through these structures? A B C D 13. Under which circumstances will lactic acid accumulate in the muscles? A Concentration of CO2 Too high B Too high C Too low D Too low Supply of O2 Less demand More demand Less demand More demand than O2 than O2 than O2 than O2 14. When a person is frightened, which substance increases the blood sugar level? a. Adrenaline b. Amylase c. Glycogen d. Insulin 15. Which region of the human brain controls balance and muscular coordination? a. Cerebellum b. Cerebrum c. Hypothalamus d. Medulla First 1 2 3 1 4 3 2 1 3 2 3 1 last 4 2 4 4 18. What happens to blood as it passes through a kidney machine? a. CO2 is removed b. Glucose is added c. Oxygen is added d. Urea is removed 19. The graph shows changes in a person’s body temperature against time. What causes the change in temperature between X and Y? a. Increased air temperature b. Increased evaporation of sweat c. Reduced blood flow through surface capillaries d. Shivering 20. The diagrams show temperature in a human when it is exposed to air and then exposed to air. skin body cold warm What caused the observed change in skin temperature on exposure to warm air? a. less blood flowing just below the skin b. less blood going to the heart and lungs c. more blood flowing just below the skin d. more blood going to the heart and lungs 21. The diagram shows bones of a human arm. the Which one of the following alternatives correctly identifies the bones numbered 1 to 4? 25. What is the percentage of oxygen in expired air when a person is resting? a. 8% b. 12% c. 16% d. 20% 26. The apparatus shown is used to investigate gas exchange during breathing. Which one of the following would occur when a person blows through tube M? What are the numbered bones? 22. Which two bones form hinge joint? a. Humerus and ulna b. Radius and humerus c. Radius and ulna d. Scapula and humerus e. Ulna and scapula a 23. In addition to calcium, the mammalian skeleton stores large amounts of a. Iron b. Nitrogen c. Phosphorus d. Sodium e. Sulphur 24. The diagram below shows a human skeleton. a. The solutions in X and Y both turn cloudy b. The solution in X remain clear, but that in Y turns cloudy c. The solution in X turns cloudy, but that in Y remains clear d. The solution in X is forced out through tube T 27. Which process does not require energy from respiration? 28. When a person breathes in, what happens to the diaphragm and to the rib cage? 29. What are the products of anaerobic respiration in yeast? 30. An athlete metre race. runs a 100