2024 JPJC Prelim H2 Biology P1 (Q)

9744 / 01 [Turn over NAME : CLASS : JURONG PIONEER JUNIOR COLLEGE JC2 Preliminary Examination 2024 BIOLOGY Higher 2 9744/01 17 September 2024 Paper 1 Multiple Choice 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class and index number on the Answer Sheet in the spaces provided unles s this has been done for you. There are thirty 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 scientific calculator is expected, where appropriate . This document consists of 21 printed pages and 3 blank pages.

2 JPJC/JC2 H2 Biology/Prelim/2024 1 Which eukaryotic cell structures all contain nucleic acids? A centrioles, chloroplasts, mitochondria, ribosomes B centrioles, mitochondria, nuclei, ribosomes C chloroplasts, mitochondria, cytoplasm, ribosomes D cytoplasm, Golgi bodies, mitochondria, nuclei 2 Mimivirus is one of many giant viruses that have recently been discovered. It has about a thousand protein-coding genes. Some scientists think that Mimivirus evolved from ancient bacteria. The genes of Mimivirus include those for: 1 light-driven proton pumps 2 Krebs cycle enzymes 3 ribosomal-binding sites 4 enzymes for linking nucleic acids to amino acids. Which Mimivirus genes are also found in anaerobic gut bacteria in humans? A 1, 2, 3 and 4 B 1 and 2 only C 2 and 4 only D 3 and 4 only

3 JPJC/JC2 H2 Biology/Prelim/2024 [Turn over 3 What is true about carbohydrates found in animals? 1 β-glucose monomers are used to synthesise cellulose. 2 Glucose, ribose and deoxyribose are monosaccharides. 3 Glycogen is insoluble in water. 4 All carbohydrates are reducing sugars. A 1, 2 and 3 B 1 and 2 only C 1 and 4 D 2 and 3 only 4 Which statements about ester bonds are correct? 1 Condensation between glycerol and fatty acids uses water and forms triglyceride. 2 Triglyceride forms three ester bonds through condensation. 3 Phospholipids and triglycerides contain ester bonds. 4 The hydrolysis of triglyceride releases saturated fatty acids and glycerol. A 1, 2, 3 and 4 B 1, 2 and 3 only C 1 and 4 only D 2 and 3 only

4 JPJC/JC2 H2 Biology/Prelim/2024 5 The cells in the roots of beetroot plants contain a red pigment. When pieces of root tissue are soaked in cold water, some of the red pigment l eaks out of the cells into the water. An experiment was c