2022 HCI JC2 H2 Biology Prelims Paper 1 QP

HWA CHONG INSTITUTION JC2 Preliminary Examinations Higher 2 CANDIDATE NAME CT GROUP 21S7___ CENTRE NUMBER INDEX NUMBER BIOLOGY Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet 9744/01 20 September 2022 1 hour INSTRUCTIONS TO CANDIDATES 1. Write your name, CT group, Centre number and index number in the spaces provided at the top of this cover page. 2. Fill in your particulars on the Multiple Choice Answer Sheet. Write your NRIC number and shade accordingly. 3. 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. 4. At the end of the paper, you are to submit only 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. The used of an approved scientific calculator is expected, where appropriate. This document consists of 22 printed pages.

2 © Hwa Chong Institution 2022 9744 H2 Biology / JC2 Preliminary Examinations / Paper 1 1 The electronmicrograph shows part of a eukaryotic cell with structures labelled A, B, C and D. Which statement is correct? A Rough endoplasmic reticulum divides the cytoplasm into compartments and is studded with numerous ribosomes, which synthesise proteins. B Mitochondrion is an energy transducer where fats and sugars are reduced to produce ATP. C Cytoplasm is an aqueous matrix containing proteins and DNA for transcription. D Euchromatin is a loosely coiled form of chromatin that is associated with proteins called histones. 2 What are the essential structural features of viruses? 1 non-cellular 2 protein coat 3 both DNA and RNA 4 either DNA or RNA A 1, 2 and 3 B 1, 2 and 4 C 1 and 3 only D 2 and 4 only A D C B

3 © Hwa Chong Institution 2022 9744 H2 Biology / JC2 Preliminary Examinations / Paper 1 3 Which row correctly describes the primary, secondary, tertiary and quaternary structures of some proteins? primary structure secondary structure tertiary structure quaternary structure A determines the folding of the polypeptide depends on hydrogen bonding between the side- chains of amino acids defines the overall shape and folding of the protein formed when two or more identical polypeptides join together B defines the order of amino acids in the polypeptide usually forms immediately after polypeptide synthesis is held together by all the types of bonding that occur in proteins found in globular proteins such as haemoglobin but never in fibrous proteins C involves