2022 J2 ASRJC H2 Biology Paper 1 (with answer)

ASRJC BIOLOGY DEPT 9744/2022/J2MYCT/P2/B [Turn over 2022 JC2 PRELIMINARY EXAMINATIONS BIOLOGY 9744/01 PAPER 1 20 SEPTEMBER 2022 MULTIPLE CHOICE TUESDAY WORKED SOLUTIONS 1 HOUR Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class and identification number on the MCQ Answer Sheet. 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. 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 scientific calculators is expected, where appropriate. This document consists of 19 printed pages. H2 ANDERSON SERANGOON JUNIOR COLLEGE HIGHER 2

2 ASRJC BIOLOGY DEPT 9744//2022/J2PRELIMS/P1 1 Four students, A, B, C and D, observed a root hair cell from a plant using an electron microscope. They were asked to confirm the presence or absence within the cell of described cellular structures. Which student made the correct set of observations? area near the nucleus containing a pair of structures that are composed of microtubules centrioles a network of tubes and sacs with each tube and sac (cisterna) bounded by a single membrane (smooth) endoplasmic reticulum a stack of elongated, curved sacs with each sac (cisterna) bounded by a single membrane Golgi body structure with a double membrane containing stacks of flattened sacs (thylakoids) chloroplast Centrioles are only found in animal cells but not in higher plant cells. (Higher pants are plants that have specialised tissues for conducting water, minerals, and photosynthetic products through the plant. In contrast, lower plants do not have roots and produce spores to reproduce, rather than flower Found in a typical eukaryotic cell Found in a typical eukaryotic cell Present in eukaryotic photosynthetic cells e.g. leaf cells. Root hair cells do not undergo photosynthesis. A ✓ × × ✓ B × ✓ ✓ ✓ C × ✓ ✓ × D ✓ ✓ × × ✓= present × = absent

3 ASRJC BIOLOGY DEPT