ACSI 2019 Y1IP Life Science FYE

1 FINAL EXAMINATION 2019 YEAR ONE IP/ SBGE INSTRUCTIONS TO STUDENTS Write your index number in the space at the top of the Question paper. Section A Answer ALL questions on the Optical Answer Sheet (OAS) using a soft pencil. Section B Answer ALL questions in the spaces provided on the Question paper. Section C Answer ALL questions in the spaces provided on the Question paper. At the end of the examination, submit the Optical Answer Sheet (OAS) and the Question paper separately. INFORMATION FOR STUDENTS The intended number of marks is given in brackets [ ] at the end of each question or part question. This paper consists of 20 printed pages, including this cover page. LIFE SCIENCES Wednesday 2 OCTOBER 2019 1 hour 30 minutes Section Marks A / 30 B / 30 C / 20 Total / 80 Name of Parent / Guardian: Signature & Date: Index Number: Anglo - Chinese School (Independent)

2 Section A: Multiple Choice Questions (30 marks) Select the most appropriate answer for each question below and shade the corresponding letter in the Optical Answer Sheet provided. 1. Which structure in a cell is responsible for the release of energy? A. Cell membrane B. Cellulose cell wall C. Mitochondrion D. Starch grain 2. The diagram below shows onion epidermal cells seen under the compound light microscope. Identify structure labelled Z which gives structural support to the cell. Image taken from: https://www.cbsesamplepapers.info/cbse/ A. Cell membrane B. Cell wall C. Cytoplasm D. Protoplasm 3. Which of the following statements about mitochondria and chloroplasts is false? A. Both organelles are oblong. B. Mitochondria are found in both plant and animal cells. C. Mitochondria are smaller in size compared to chloroplasts. D. Only chloroplasts have a double membrane. Z

3 4. A student was viewing a prepared slide on human cheek cells, using the X4 objective lens of the compound light microscope. What is the correct steps to take, if he wants to view the cells under the next higher magnification? I Adjust the coarse adjustment knob II Adjust the fine adjustment knob III Lower the stage IV Move the nose piece and click the X10 objective lens in place A. IV → I B. IV → II C. III → IV → I D. II → IV → III → I 5. What is the energy conversion that occurs in chloroplasts during photosynthesis? A. ATP (energy used by the cell) → Chemical energy B. Chemical energy → ATP (energy used by the cell) C. Chemical energy → Light energy D. Light energy → Chemical energy 6. Which of the following shows examples of tissues in organisms? A. blood and connective B. epidermal and leaf C. epithelial and skin D. vascular and shoot 7. What is/ are produced when the muscle undergoes anaerobic respiration? A. Carbon dio