9700_s03_qp_1

9700_s03_qp_1 - CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level 9700/01 BIOLOGY

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This document consists of 16 printed pages. SP (AT/SLC) S41717/6 © UCLES 2003 [Turn over CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level BIOLOGY 9700/01 Paper 1 Multiple Choice May/June 2003 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.
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2 9700/1/M/J03 1 An actively growing cell is supplied with radioactive amino acids. Which cell component would first show an increase in radioactivity? A Golgi body B mitochondrion C nucleus D rough endoplasmic reticulum 2 Which pair of organelles has internal membranes? A chloroplasts and mitochondria B chloroplasts and nuclei C mitochondria and ribosomes D nuclei and ribosomes 3 Which combination is found in a prokaryotic cell? endoplasmic reticulum DNA RNA nucleus A ✓✓✗ B ✓✗✗✓ C ✗✓✓✗ D ✗✗✓ key present absent
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3 9700/1/M/J03 [Turn over 4 Strips of plant tissue were immersed in a range of sucrose solutions of different concentrations. Their lengths were measured before immersion and after 30 minutes in the different solutions. The graph shows the ratio of initial length to final length. Which concentration of sucrose solution, in mol dm –3 , has the same water potential as the cell sap before immersion? A 0.1 B 0.25 C 0.45 D 0.8 5 The diagram shows a section of a cell surface membrane. What causes the phospholipid molecules to be arranged as shown? A The heads are hydrophilic and point towards water molecules. B The heads are hydrophobic and point away from water molecules. C The tails are hydrophilic and point away from water molecules. D The tails are hydrophobic and point towards water molecules. head tail phospholipid molecule 0.1 initial length final length sucrose concentration / moldm –3 0.4 0.6 0.8 1.0 1.2 1.4 0.2 0.3 0.4 0.5 0.6 0.7 0.8
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4 9700/1/M/J03 6 Many fresh water animals possess vacuoles which contract regularly, expelling excess water. Why do plants living in fresh water not require such vacuoles? A Plant cell sap has a much lower concentration of dissolved solutes than animal cytoplasm.
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This note was uploaded on 01/25/2012 for the course BIO alevels taught by Professor J.b during the Spring '11 term at Taylor's.

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9700_s03_qp_1 - CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level 9700/01 BIOLOGY

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