SJI 2017 Bio Prelim P1 QP

1 Name: ______________________________ Class: ________ Index No. : _____ ST JOSEPH’S INSTITUTION PRELIMINARY EXAMINATION 2017 SECONDARY 4 (O LEVEL PROGRAMME) BIOLOGY Paper 1 Multiple Choice Candidates answer on Multiple Choice Answer Sheet (OTAS). 5158/01 24 August 2017 1 hour (1030 hr – 1130 hr) READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class and index number on the Answer Sheet (OTAS) in the spaces provided. There are forty questions in this paper. Answer all questions. For each question, there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet (OTAS). This document consists of 17 printed pages including this cover page. [Turn over]

2 1 The diagram shows a drawing of a typical plant cell. Which organelle, seen only under the electron microscope, is correctly matched to its function? Structure Function A I Chemically modifies and transports substances out of cell B II Contains pigments that carry out photosynthesis C III Site of aerobic respiration and releases energy for cell D IV Controls the movement of substances in and out of cell 2 Which of the following correctly compares between a red blood cell and a xylem cell? A Both are unable to carry out cell division B Cell membrane is absent in both cells C Cellulose cell wall is absent in both cells D Both are involved in active transport III II I IV

3 3 Four potato strips were each placed in a petri dish of either 5 % sucrose solution or distilled water for 20 minutes. Which of petri dishes would show the result of the appearance of cells shown below? 4 The following is a list of laboratory steps. (I) Add copper(II) sulfate drop by drop (II) Shake well to mix (III) Place in a boiling water-bath (IV) Add Benedict’s solution (V) Add sodium hydroxide solution Arrange the steps in the order which they need to be carried out to show the presence of a protein. A IV I II III B IV V II - C V I II III D V II I -

4 5 Which of the following biological activities produces the graph shown below when affected by temperature? A Removal of salt through the sweat duct of skin during sweating. B Absorption of glucose in duodenum down concentration gradient. C Ultrafiltration at glomeruli to remove urea in kidneys. D Formation of carbon dioxide with bicarbonate ions and water in blood cells. For questions 6, 7 and 8, refer to the following diagram of a section of the wall of the duodenum. 6 An extract was taken from point X. Which of the following is correct? A Its contents will be acidic in nature. B Its contents will contain enzymes active in both neutral and alkaline pH. C Its contents will be able to digest polypeptides. D Its contents will contain a substance that can physically digest fats. Rate of activity Temperature / o C

5 7 Extracts taken from points V and W were compared. Which of the following shows an accurate description of the relative concentrations of various nutrients when V is compared to W? V W A More galactose More lactose B More fats More glycerol and fatty acids C More amino acids More polypeptides D More maltose More starch 8 Which of the following is false about the layers Y and Z? A They are present in the walls of stomach. B They are present at the ribcage in the respiratory system C They are antagonistic to each other. D They require energy to work. 9 A drop of a man’s blood was placed into Dish X and Dish Y and the results are shown below. Dishes X and Y may each contain an antibody or contain no antibody at all. Which of the following combination of antibody present in each dish and man’s blood group would give the results shown above? Dish X antibody Dish Y antibody Man’s blood group A a b AB B - b AB C b a B D a - A

6 10 The diagram shows partial blockage in a coronary artery. Which of the tubes, A, B, C or D shows correctly a successful coronary bypass operation? 11 The following shows the pressure changes in the left side of the heart during one cardiac cycle. At which point is the aortic valve (semi lunar valve) beginning to open?

7 12 The diagram below shows the gaseous exchange in a pair of alveoli in a human lung. Which of the following must occur to allow gaseous exchange to take place as shown in the diagram above? External intercostal muscles Diaphragm Thoracic volume A Contract Relaxes Increases B Relax Contracts Decreases C Contract Contracts Increases D Relax Relaxes Decreases 13 The following is a diagram of a kidney nephron and a collecting duct of a healthy person. A Biuret test and Benedict’s test were done on samples taken from A, B, C and D. Which of the following is accurate for the results of these tests? Biuret Test Benedict’s test A Negative Positive B Positive Negative C Positive Negative D Negative Positive A B C D

8 14 The diagram below shows the cross section of a dicotyledonous leaf. The numbered arrows indicate the movement of water across the cells and out of the leaf. Which of the above arrows will show an increase in water movement when the external environment is of a very high humidity and temperature? A I and II B II and III C I and III D I, II and III 15 In humans, a decrease in urine production occurs as a result of I an increase in the environmental temperature. II an increase in the water uptake. III an increase in the uptake of sodium chloride. IV decreased sweating. A Only I is correct. B I and III are correct. C I, II and III are correct. D I, III and IV are correct.

9 16 A baker stands near a hot oven for about ten minutes. Some of the changes that occur in response to the increase in external temperature are listed. 1. Blood vessels in the skin dilate 2. Brain (hypothalamus) is stimulated 3. Skin temperature changes 4. Temperature receptors (thermoreceptors) in the skin detect the change Which sequence of events occurs? A 2  1  3  4 B 3  1  4  2 C 4  2  1  3 D 4  1  2  3 Questions 17 and 18 refer to experimental set ups below. Three experiments, 1, 2 and 3, are set up to investigate which factors are necessary for photosynthesis. The plants have variegated leaves, with green and white regions. After two days, a leaf was plucked from each plant and tested with iodine solution. 17 Which of the leaves A, B, C or D was taken from plant 1? 18 Which of the leaves A, B, C or D was taken from plant 3?

10 19 The photomicrograph shows a pollen grain seen under a scanning electron microscope. Which deduction about its flower can be made based on the photomicrograph? A The flower contains feathery stigma. B The flower is adapted only for cross-pollination. C The flower contains nectary. D The flower is always bisexual. 20 The diagram shows the male reproductive and part of the urinary systems. Which structure is important for both reproduction and excretion? 21 Which one of the following statements about the placenta is incorrect? A It provides the pathway for excretion by the foetus. B It is connected to the foetus by the umbilical cord. C It transfers the mother’s blood to the foetus. D It releases hormones during pregnancy. 2