2016 RVHS H2 Biology Prelims Paper 1 Questions

River Valley High School Page 1 of 25 Year 6 H2 Biology 9648 Paper 1 2016 Preliminary Examination II RIVER VALLEY HIGH SCHOOL YEAR 6 PRELIMINARY EXAMINATION II H2 BIOLOGY 9648 PAPER 1 26 SEP 2016 1 HOUR 15 MIN CANDIDATE NAME CENTRE NUMBER S INDEX NUMBER READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, centre and index number on the Answer Sheet in the spaces provided. DO NOT WRITE IN ANY BARCODES. There are forty questions in 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 Question Paper consists of 25 printed pages.

River Valley High School Page 2 of 25 Year 6 H2 Biology 9648 Paper 1 2016 Preliminary Examination II 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. 1 A sample of yeast cells were grown in a culture with radioactive amino acids. At various times, samples of the cells were taken and the amount of radioactivity in different organelles was measured. The results are shown in the table below. Time after radioactive amino acids were added to the solution/ minute Amount of radioactivity present/arbitrary units P Q R 10 21 120 6 20 42 68 6 40 86 39 8 60 76 28 15 90 50 27 28 120 38 26 56 Which of the following best describes the identities of organelles P, Q and R? P Q R A Golgi apparatus Rough endoplasmic reticulum Secretory vesicles B Rough endoplasmic reticulum Smooth endoplasmic reticulum Golgi apparatus C Rough endoplasmic reticulum Secretory vesicles Golgi apparatus D Smooth endoplasmic reticulum Golgi apparatus Secretory vesicles

River Valley High School Page 3 of 25 Year 6 H2 Biology 9648 Paper 1 2016 Preliminary Examination II 2 Three unknown specimens were tested to determine the identity of biomolecule(s) present. The results are shown in the table below. biuret solution benedict’s solution and heated dilute hydrochloric acid, benedict’s solution and heated iodine in potassium iodide solution Specimen 1 purple blue brick-red brown Specimen 2 purple blue blue blue-black Specimen 3 blue brick-red brick-red brown Using the results shown, which of the following can be concluded? 1 When treated with amylase, Specimen 2 will yield the same resul