2017 RVHS H2 Biology Prelims Paper 1 Answers

River Valley High School Page 1 of 19 Year 6 H2 Biology 9744 Paper 1 2017 Preliminary Examination II RIVER VALLEY HIGH SCHOOL YEAR 6 PRELIMINARY EXAMINATION II CANDIDATE NAME CENTRE NUMBER S CLASS INDEX NUMBER H2 BIOLOGY 9744/01 Paper 1 Multiple Choice 22 Sep 2017 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, Centre number, index number on the Answer Sheet in the spaces provided unless this has been done for you. name in the spaces at the top of this page. DO NOT WRITE IN ANY BARCODES. 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 Question Paper consists of 16 printed pages.

River Valley High School Page 2 of 19 Year 6 H2 Biology 9744 Paper 1 2017 Preliminary Examination II 1 The figure below shows an electron micrograph with two plant cells. Peter v. Sengbusch - b-online@botanik.uni-hamburg.de Which of the following statements correctly describes the labelled structures? 1 R contains circular DNA and is found in both prokaryotic and eukaryotic cells. 2 P has a fluid mosaic structure and regul ates the movement of substances between the two plant cells. 3 S acts as a selective permeable barrier. 4 Q contains enzymes which play an important role in cell specialisation. A 1 and 3 B 3 and 4 C 1, 2 and 3 D All of the above 2 Which of the following statements regarding stem cells are not correct? 1 Stem cells are present within various organs of the adult body. 2 Stem cells can develop into a whole organism when implanted into the womb. 3 Stem cells can be grown indefinitely in culture under appropriate culture conditions. 4 Stems cells isolated from a 3-5 day old human embryo can differentiate into only one kind of cells. P R Q S

River Valley High School Page 3 of 19 Year 6 H2 Biology 9744 Paper 1 2017 Preliminary Examination II 5 Induced pluripotent stem cells have the same developmental potential as embryonic stem cells. A 1 and 3 only B 2 and 4 only C 2, 3 and 5 D 1, 2 and 3 3 Graph A shows the transport of molecule X, with the help of carrier proteins, over time. A student predicted that the alteration of one variable would result in graph B. Which row shows the correct transport process and the alteration in