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CIE AS Biology Paper 1 (Variant 2) Summer 2012
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    This document consists of 17  printed pages and 3  blank pages. IB12 06_9700_12/4RP © UCLES 2012 [Turn over          *           1           8           8           9           0           0           2           7           0           5          *       UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education  Advanced Subsidiary Level and Advanced Level BIOLOGY 9700/12  Paper 1 Multiple Choice  May/June 2012 1 hour Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended) READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, Centre number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you. 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 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.   w  w  w  . X   t  r  e  m  e  P  a   p  e  r  s  . c  o  m    2   © UCLES 2012 9700/12/M/J/12 1  Which range of sizes would include most eukaryotic cells? A 1 ×  10 2   nm to 1   µ m B 1   µ m to 1 ×  10 1   µ m C 1 ×  10 1   µ m to 1 ×  10 2   µ m D 1 ×  10 2   µ m to 1 ×  10 3   µ m 2  A student was asked to draw a plan diagram of the plant tissue shown in the photomicrograph and to annotate two observable features. What are the correct annotations? A epidermis darkly stained layer of cells, xylem hollow vessels B epidermis formed of single layer of cells, xylem strengthened by lignin C phloem small cells, xylem empty cells to transport water D vascular bundles arranged in a regular pattern, xylem large dead cells 3 Which structure is present in all eukaryotic cells but not  present in prokaryotic cells? A  70S ribosome B  cell wall C  chromatin D  plasmid  3   © UCLES 2012 9700/12/M/J/12 [Turn over    4  What restricts the resolution of the light microscope? A the inability to cut very thin sections B the low light intensity of microscope lamps C the low magnification produced by glass D the wavelengths of visible light 5  The diagram shows an electron micrograph of virus particles in a human nucleus. virus particles × 24 000  What is the diameter of the labelled virus particles? A 1.5 ×  10 0   µ m B 1.5 ×  10 –2   µ m C 1.5 ×  10 0   nm D 1.5 ×  10 2   nm  4   © UCLES 2012 9700/12/M/J/12 6  A student carried out a series of tests on an extract from a plant. The table shows the results of the tests. reagent observation ethanol and water white emulsion Benedict’s solution brick red precipitate Biuret blue colour Which row shows the molecules found in the plant extract? protein fatty acids reducing sugar A    key B     =   present C     = absent   D    7  Glycogen is a polymer of glucose. Which description summarises its structure? A α -glucose joined by glycosidic bonds involving carbons 1 and 4 B α -alpha glucose joined by glycosidic bonds involving carbons 1, 4 and 6 C β -beta glucose joined by glycosidic bonds involving carbons 1 and 4 D β -beta glucose joined by glycosidic bonds involving carbons 1, 4 and 6 8  Which molecules contain C=O bonds? 1 amino acids 2 fatty acids 3 proteins A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3
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