YYSS Pure Bio 2024 P1, P2, MS

YUYING SECONDARY SCHOOL PRELIMINARY EXAMINATION Secondary 4 Express NAME CLASS REG. NO BIOLOGY 6093/1 Paper 1 22 August 2024 1 hour Additional Materials: Multiple Choice Answer Sheet Setter: Mr Darren Kung READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class and register number on this question booklet and the separate Answer Sheet. There are forty questions on 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. Read the instructions on the Answer Sheet very carefully. 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. The use of an approved calculator is expected, where appropriate. For Examiner’s Use Total

2 1 Which organelle is not correctly paired with its cellular function? organelle function A endoplasmic reticulum transports proteins to the Golgi body B Golgi body stores proteins and carbohydrates C mitochondrion releases energy D ribosome joins amino acids together 2 Which statement about the muscle cells is incorrect ? A They contain few mitochondria. B They contain many nuclei. C They contract and relax to produce movement. D They have contractile protein fibres. 3 The diagram shows an experiment demonstrating osmosis using a dialysis tubing bag. After 30 minutes, the level of the liquid in the glass tube goes ......1...... because the water had a ......2...... water potential than the sugar solution. Which words correctly complete the statement? 1 2

3 A down lower B down higher C up lower D up higher 4 The diagram shows part of a protein molecule. What does X represent? A amino acid B fatty acid C glycerol D sugar 5 Which food-testing solution shows a positive result when it turns from blue to purple? A Benedict’s solution B biuret solution C ethanol D iodine solution 6 The apparatus shown is used for an experiment on starch digestion. Which test-tube contains the most sugar after 20 minutes?

4 7 Which of the following is not an effect of alcohol consumption on the body? A brain damage B decreased reaction time C decreased self-control D liver disease 8 Which row correctly indicates the structural properties of a villus that allow the rate of absorption in the small intestine to increase? rich network of capillaries folding of the cell membrane thick surface epithelium A ✔ ✔ ✔ B ✔ ✔ 🗶 C ✔ 🗶 ✔ D 🗶 ✔ 🗶 9 The diagram shows a section of the alimentary canal pushing along partially digested food. Muscle Y is contracting at point Z. Which row correctly identifies