NYGH 2010-S3EOY-Bio P1

Class Register Number Name 南洋女子中学校 NANYANG GIRLS’ HIGH SCHOOL End-of-Year Examination 2010 Secondary Three BIOLOGY 45 minutes Paper 1 Multiple Choice 0800 - 0845 Thursday 14 October 2010 Additional materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Do not open this booklet until you are told to do so. Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class and register number on the Multiple Choice Answer Sheet provided. There are thirty 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 answer sheet. INFORMATION FOR CANDIDATES Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. Setter: BK, KHN & OC This document consists of 15 printed pages. NANYANG GIRLS’ HIGH SCHOOL [Turn over

2010 End-of-Year Examination Secondary Three 2 Nanyang Girls’ High School BK, KHN & OC Biology Questions 1,2 and 3 refer to the diagrams below. Students investigated the effectiveness of four different antibacterial mouthwashes, P, Q, R and S. Identical filter paper discs were soaked in mouthwashes P, Q, R and S respectively. The discs were then placed on Staphylococcus bacteria growing in a petri dish, as shown in the diagram below. The dish was covered and left for 48 hours. The diagram below shows the appearance of the petri dish after 48 hours. Petri dish Staphylococcus bacteria covering the surface of nutrient jelly

2010 End-of-Year Examination Secondary Three 3 Nanyang Girls’ High School BK, KHN & OC Biology 1 What was the independent variable in this investigation? A The temperature of the room. B The type of mouthwash. C The time the dish was left for incubation. D The size of the clear area. 2 Which was a controlled variable in this investigation? A The diameter of each bacterium. B The diameter of the petri dish. C The diameter of the clear area. D The diameter of each filter paper disc. 3 Which mouthwash killed the most Staphylococcus bacteria? A P B Q C R D S 4 The diagram shows a plant cell. Which label shows the tonoplast?

2010 End-of-Year Examination Secondary Three 4 Nanyang Girls’ High School BK, KHN & OC Biology 5 Which of the following shows the c haracteristics of a xylem vessel? Nucleus Chloroplast Vacuole Cell wall A Present Present Present Present B Present Present Absent Absent C Absent Absent Absent Present D Absent Absent Absent Absent 6 The table below shows some characteristics of four types of cell. Which cell could be a root hair cell? Nucleus Chloroplast Mitochondrion A 9 × 9 B × 9 9 C × 9 × D × × × 7 A potted plant is left under the sun. Afte r a few hours, a leaf is stained with iodine solution and appeared blue-black. Which structure contributes to the blue-black colouration? A Chloroplast B Nucleus C Air space D Cell wall

2010 End-of-Year Examination Secondary Three 5 Nanyang Girls’ High School BK, KHN & OC Biology 8 The diagram shows an animal cell. P Q R S T U What is the functional relations hip between the labelled structures? A P is synthesised by S. B Q develops into U. C R contains products synthesised by T. D S controls the contents of T. 9 Four pieces of agar were cut in different sizes and placed into separate dishes of ink. Which block will be stained the fastest? (All units are in cm) A B C D 4 4 8 4 4 4 8 8 8 8 4 8

2010 End-of-Year Examination Secondary Three 6 Nanyang Girls’ High School BK, KHN & OC Biology 10 Urine samples from four patients, A, B, C and D were tested. Which patient should be treated with insulin injections? Test Person Biuret Test Benedict's Test Alcohol emulsion test A solution formed blue ppt solution turned violet solution formed white ppt B solution remained blue solution formed orange ppt solution remained colourless C solution formed orange ppt solution remained colourless solution formed white emulsion D solution remained violet solution remained blue solution remained blue 11 What is the terminal (end) porti on of the small intestine called? A Cecum B Duodenum C Ileum D Jejunum 12 Which of the following organs is not considered part of the digestive system? A Gallbladder B Pancreas C Spleen D Tongue 13 Which of the following organs is not c onsidered part of the large intestine? A Appendix B Colon C Glottis D Rectum

2010 End-of-Year Examination Secondary Three 7 Nanyang Girls’ High School BK, KHN & OC Biology Questions 14 and 15 refer to the figure below. 1 7 H 8 3 2 6 4 5 14 Which part 1, 2, 3 or 4 does most hydrolysis of triglycerides occur? A 1 B 2 C 3 D 4 15 In which of the following structures does most absorption of water occur? A 5 B 6 C 7 D 8

2010 End-of-Year Examination Secondary Three 8 Nanyang Girls’ High School BK, KHN & OC Biology 16 The following statements refer to light-de pendent and light-independ ent reactions of photosynthesis. Statement 1 – Oxygen is produced. Statement 2 – Carbon dioxide is fixed. Statement 3 – Occurs in stroma. Which of the following shows the correct match of statements to reactions? Light-dependent reactions Light-independent reactions A 1, 3 2 B 2, 3 1 C 1 2, 3 D 2 1, 3 17 The micrograph shows the shapes of the cells in a section of a leaf. In which cell type does most photosynthesis occur?

2010 End-of-Year Examination Secondary Three 9 Nanyang Girls’ High School BK, KHN & OC Biology Questions 18 and 19 refer to the diagram below which shows an apparatus that is set up to investigate the rate of photosynthesis in a waterweed. 18 Which of the following will significantly increase the rate of photosynthesis of the waterweed? A Submerge the waterweed more by attaching paper clips to it. B Increase the light intensity of the bulb to 100 W. C Increase the volume of water in the syringe. D Increase the space P in the syringe. 19 In this experiment, what is the limiting factor in the rate of photosynthesis in the waterweed? A The temperature of the environment. B The volume of water in the syringe. C The level of oxygen dissolved in the water. D The level of carbon dioxide dissolved in the water.

2010 End-of-Year Examination Secondary Three 10 Nanyang Girls’ High School BK, KHN & OC Biology 20 The photomicrograph below shows a cross section of a Ranunculus root. Source: http://sols.unlv.edu/Schulte/Anatomy/Roots/RanunculusRoot.jpg Identify structures P, Q and R. P Q R A xylem phloem epidermis B phloem xylem endodermis C epidermis xylem phloem D endodermis phloem xylem 21 The following statements describe the blood clotting process. Arrange the statements in order. 1 Fibrinogen is converted to fibrin. 2 Mesh traps blood cells, forming a clot. 3 Prothrombin is converted to thrombin. 4 Damaged tissue and platelets produce thrombokinase. 5 Fibrin units form threads which form a mesh. A 1, 2, 3, 4, 5 B 1, 3, 4, 5, 2 C 4, 1, 3, 2, 5 D 4, 3, 1, 5, 2 Q R P