AL Bio Past Paper 91 03 PART III A

A-LEVEL BIOLOGY PAST PAPER 1991-2003
TABLE OF CONTENTS
PART I
CELL BIOLOGY ………………………………………………………………… 3 FOOD COMPONENTS …………………………………………………………… 9 ENZYME ………………………………………………………………………..… 10 MOVEMENT OF WATER – IN AND OUT OF CELL ………………………. 17 AUTOTROPHIC NUTRITION ……………………………………………….….. 19 HETEROTROPHIC NUTRITION ………………………………………………. 25 RESPIRATION ………………………………………………………………...…. 28 GASEOUS EXCHANGE ……………………………………………………… 34 CLASSIFICATION …………………………………………………………….…. 35

PART II
TRANSPORT IN ANIMALS ………………………………………………....…. 47 TRANSPORT IN PLANTS ……………………………………………………. 54 SUPPORT AND MOVEMENT ……………………………………………….. 58 PLANT HORMONES ………………………………………………………….. 64 COORDINATION …………………………………………………………...……. 67 HORMONES ………………………………………………………………….….. 72 HOMEOSTASIS ………………………………………………………………….. 78 ECOLOGY ………………………………………………………………….….. 84 TERMS ……………………………………………………………………………. 84 ENERGY FLOW ………………………………………………………………..…… 84 ECOLOGY STUDY (FIELD) ……………………....…………………………….…… 84 PYRAMIDS ………………………………………………………………………….. 84 SOIL ………………………………………………………………………………… 84 NITROGEN CYCLE …………………………………………………………………. 88

PART III
HABITAT ………………………………………………………………….………… 94 INTERDEPENDENCE OF ORGANISMS ………………………………………….… 106 POPULATION ………………………………………………..……………………. 113 SUCCESSION ……………………………………………………………..………. 115 OTHERS ……………………………………………………………………...…… 116 CONSERVATION ………………………………………………………………. 119 MAN’s IMPACT ON ENVIRONment ……………………………………... 121 microorganisms ………………………………………………………..… 131 body defence ………………………………………………………………. 135

part iv reproduction ……………………………………………………...………. 139 growth ……………………………………………………………………….. 147 genetics ……………………………………………………..……………….. 159 evolution …………………………….……………………………….…… 173 essay …………………………………………………………………………… 174 diseases / medicine …………………...…………………………………..…… 174 miscellaneous …………………………………….……………………...…… 177 index ……………………………………………………………………………. 178

A-LEVEL BIOLOGY PAST PAPER 1991-2003
TABLE OF CONTENTS
(PART III)

ECOLOGY
Habitat 94
Interdependence of Organisms 106