AS Biology (Instant Revision)

AS Biology

Steve Potter

Series Editor: Jayne de Courcy

Published by HarperCollinsPublishers Ltd 77-85 Fulham Palace Road London W6 8JB

On-line support for schools and colleges

?HarperCollinsPublishers 2002 First published 2002 Acrobat eBook Reader edition v 1. January 2002 ISBN: 0-00-714426-1 Steve Potter asserts the moral right to be identified as the author of this work. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without either the prior permission of the Publisher or a licence permitting restricted copying in the United Kingdom issued by the Copyright Licensing Agency Ltd, 90 Tottenham Court Road, London W1P 0LP. This book is sold subject to the condition that it shall not by way of trade or otherwise be lent, hired out or otherwise circulated without the Publisher's prior consent. British Library Cataloguing in Publication Data A catalogue record for this book is available from the British Library. Edited by Eva Fairnell Production by Kathryn Botterill Design by Gecko Ltd Illustrations by Gecko Ltd Cover design by Susi Martin-Taylor Printed and bound by Scotprint Every effort has been made to contact the holders of copyright material, but if any have been inadvertently overlooked, the Publishers will be pleased to make the necessary arrangements at the first opportunity.

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Steve Potter

Series Editor: Jayne de Courcy

AS Biology

Contents

Introduction

iv

1 Microscopes and Cells

1

2 Biological Molecules

6

3 Enzymes

12

4 The Cell Cycle

19

5 Membranes and Transport

24

6 Nucleic Acids

29

7 Genetic Engineering

34

8 Gas Exchange

39

9 Transport in Humans

44

10 Transport in Plants

51

11 Digestion in Animals

56

12 Patterns of Nutrition

61

13 Ecology

64

14 Sexual Reproduction in Flowering Plants

76

15 Reproduction in Humans and Other Mammals

79

16 Human Development and Ageing

85

17 Pathogens and Disease

89

18 The Biological Basis of Heart Disease and Cancer

96

19 Controlling Disease

101

Check yourself answers

104

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Get the most out of your

Instant Revision pocket book

1 Learn and remember what you need to know. The book

contains all the really important facts you need to know for your exam. All the information is set out clearly and concisely, making it easy for you to revise.

2 Find out what you don't know. The Check yourself questions

help you to discover quickly and easily the topics you're good at and those you're not so good at.

What's in this book

1 The content you need for your AS exam

G Important biological concepts are explained concisely to give a clear understanding of key processes.

G The table on page vi shows which chapters cover the modules in your specification, so only revise those topics you will be examined on.

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