GCSE Biology March 2007 Evolution & Environment Answer Key

abc General Certificate of Secondary Education Science A 4461 Biology 4411 BLY1B F & H Objective Test Answer Keys March 2007 examination series Version : 1.0Answer keys are prepared by the Principal Examiner and considered, together with the relevant questions, by a panel of subject teachers. Further copies of these answer keys are available to download from the AQA Website: www.aqa.org.uk Copyright © 2007 AQA and its licensors. All rights reserved. COPYRIGHT AQA retains the copyright on all its publications. However, registered centres for AQA are permitted to copy material from this booklet for their own internal use, with the following important exception: AQA cannot give permission to centres to photocopy any material that is acknowledged to a third party even for internal use within the centre. Set and published by the Assessment and Qualifications Alliance. The Assessment and Qualifications Alliance (AQA) is a company limited by guarantee registered in England and Wales (company number 3644723) and a registered charity (registered charity number 1073334). Registered address: AQA, Devas Street, Manchester M15 6EX Dr Michael Cresswell Director GeneralScience A/Biology – BLY1B (Evolution and Environment) -AQA GCSE Answer Keys March 2007 series 3 BLY1B (Evolution and Environment) Foundation Tier Question Key One A black skin 4 B small ears 2 C thick fur 3 D white fur 1 Two A limb is adapted for burrowing 3 B limb is adapted for flying 4 C limb is adapted for gripping branches 1 D limb is adapted for running 2 Three A carbon dioxide 1 B greenhouse 2 C ice caps 3 D sea 4 Four A evolved 1 B genes 3 C natural selection 2 D survived 4 Five A cell 1 B chromosome 4 C enzymes 2 D gene 3 Six A A cloned human could have an identical twin 30 years younger than 4 B Many cloned animals have died early in their lives. 3 C The first scientist to clone a human will be famous. 2 D The techniques needed to clone humans could be used to produce human 1 A B C D Seven 3 1 4 2 Eight 4 4 2 1 Nine 2 3 3 2 Science A/Biology – BLY1B (Evolution and Environment) -AQA GCSE Answer Keys March 2007 series 4 BLY1B (Evolution and Environment) Higher Tier Question Key One A cell 1 B chromosome 4 C enzymes 2 D gene 3 Two A parents 4 B politicians 1 C scientists 2 D society 3 A B C D Three 4 4 2 1 Four 2 3 3 2 Five 1 4 2 4 Six 3 4 4 3 Seven 1 2 4 4 Eight 1 1 1 3 Nine 2 3 4 3