CIE Biology IGCSE Topic Questions 1 Characteristics and classification of living organisms 1.1 Characteristics of living organisms 1.2 Concept and use of a classification system 1.3 Features of organisms 1.4 Dichotomous keys 3 Movement in and out of cells 3.1 Diffusion 3.2 Osmosis 3.3 Active transport 2 Organisation of the organism 2.1 Cell structure and organisation 2.2 Levels of organisation 2.3 Size of specimens 4 Biological molecules 4.1 Biological molecules 5 Enzymes 5.1 Enzymes 7 Human nutrition 7.1 Diet 7.2 Alimentary canal 7.3 Mechanical digestion 7.4 Chemical digestion 7.5 Absorption 6 Plant nutrition 6.1 Photosynthesis 6.2 Leaf structure 6.3 Mineral requirements 8 Transport in plants 8.1 Transport in plants 8.2 Water uptake 8.3 Transpiration 8.4 Translocation 9 Transport in animals 9.1 Transport in animals 9.2 Heart 9.3 Blood and lymphatic vessels 9.4 Blood 11 Gas exchange in humans 11.1 Gas exchange in humans 10 Diseases and immunity 10.1 Diseases and immunity 12 Respiration 12.1 Respiration 12.2 Aerobic respiration 12.3 Anaerobic respiration 13 Excretion in humans 13.1 Excretion in humans 15 Drugs 15.1 Drugs 15.2 Medicinal drugs 15.3 Misused drugs 14 Coordination and response 14.1 Nervous control in humans 14.2 Sense organs 14.3 Hormones in humans 14.4 Homeostasis 14.5 Tropic responses 16 Reproduction 16.1 Asexual reproduction 16.2 Sexual reproduction 16.3 Sexual reproduction in plants 16.4 Sexual reproduction in humans 16.5 Sex hormones in humans 16.6 Methods of birth control in humans 16.7 Sexually transmitted infections (STIs) 17 Inheritance 17 Inheritance 17.2 Chromosomes, genes and proteins 17.3 Mitosis 17.4 Meiosis 17.5 Monohybrid inheritance 19 Organisms and their environment 19.1 Energy flow 19.2 Food chains and food webs 19.3 Food chains and food webs continued 19.4 Nutrient cycles 19.5 Population size 21 Human influences on ecosystems 21.1 Food supply 21.2 Habitat destruction 21.3 Pollution 21.4 Conservation 18 Variation and selection 18.1 Variation 18.2 Adaptive features 18.3 Selection 20 Biotechnology and genetic engineering 20.1 Biotechnology and genetic engineering 20.2 Biotechnology 20.3 Genetic engineering
