BPGHS_2018_Bio_Prelim_P1_QP.pdf

Name of Candidate: _____________________ ( ) Class: _________ Calculator Model: This paper consists of 17 printed pages. BUKIT PANJANG GOVERNMENT HIGH SCHOOL Preliminary Examination 2018 SECONDARY 4 Express BIOLOGY Paper 1 6093/01 Date: 17August, 2018 Duration: 1h r Time: 0745 – 0845 hr 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 paper and the Optical 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 a soft 2B 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 question paper. The use of an approved scientific calculator is expected, where appropriate. [Turn over For Examiner’s Use Total /40 www.KiasuExamPaper.com 58

2 ©BPGHS 2018 6093 / SEC 4 EXP BIO PRELIM / P1 / 18 [Turn over 1 The table shows some of the structural features present or absent in four different types of cell types. Which row correctly identifies cell types P to S? cell P cell Q cell R cell S A guard cell red blood cellroot hair cellxylem vessel Bred blood cell guard cell xylem vesselroot hair cell C root hair cellxylem vesselred blood cell guard cell D xylem vesselroot hair cell guard cell red blood cell 2 The figure below shows a cell. Which of the following features in the cell shown suggest that it is an animal cell? (i) It has a cell wall to p rovide mechanical support. (ii) It has a flagellum to help in locomotion. (iii) It has mitochondria for the release of energy. (iv) It has a nucleus to contro l all its cellular activities. A (i) and (ii) B (ii) only C (iii) and (iv) C (iv) only www.KiasuExamPaper.com 59

3 ©BPGHS 2018 6093 / SEC 4 EXP BIO PRELIM / P1 / 18 [Turn over 3 Excess sugars formed by photosynthesis may be converted into other carbohydrates. Which of the following is correct? storage carbohydratestructural carbohydrate A cellulose starch B glucose glycogen C starch cellulose D glycogen glucose 4 The concentrations of nitrates inside and outside four different root hair cells are shown below. Which cell requires the most energy for the absorption of nitrates by active transport? cell concentration outside the cell / moldm-3 concentration inside the cell / moldm-3 A B C D 9 6 3 6 4 9 7 3 www.KiasuExamPaper.com 60

4 ©BPGHS 2018 6093 / SEC 4 EXP BIO PRELIM / P1 / 18 [Turn over 5 The graph shows the changes in the mass of a piece of plant tissue in distilled water at 30 oC. The following conclusions are made. (i) The plant cells are plasmol ysed between 1.5 hrs to 2.5 hrs. (ii) The plant cells are fully turgid between 1.5 hrs to 2.5 hrs . (iii) The rate of osmosis is highest from 1.5 hrs to 2.5 hrs. (iv) Th