You can use this book if you are studying Combined Science: Trilogy
Contents How to use this book
you will need to master all of the ideas and concepts on these pages you will need to master some of the ideas and concepts on these pages.
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Chapter 1 Cell Biology 12 1.1 Looking at cells 14 1.2 The light microscope 16 1.3 Looking at cells in more detail 18 1.4 Required practical: Using a light microscope to observe and record animal and plant cells 20 1.5 Primitive cells 22 1.6 Cell division 24 1.7 Cell differentiation 26 1.8 Cancer 28 1.9 Stem cells 30 1.10 Stem cell banks 32 1.11 Key concept: Cell development 34 1.12 Cells at work 36 1.13 Living without oxygen 38 1.14 Growing microorganisms 40 1.15 Testing new antibiotics 42 1.16 Required practical: Investigating disinfectants 44 1.17 Maths skills: Size and number 46 Chapter 2 Photosynthesis 54 2.1 Explaining photosynthesis 56 2.2 Looking at photosynthesis 58 2.3 Investigating leaves 60 2.4 Required practical: Investigate the effect of light intensity on the rate of photosynthesis using an aquatic organism such as pondweed 62 2.5 Increasing photosynthesis 64 2.6 Increasing food production 66 2.7 Key concept: Diffusion in living systems 68 2.8 Looking at stomata 70 2.9 Moving water 72 2.10 Investigating transpiration 74 2.11 Moving sugar 76 2.12 Maths skills: Surface area to volume ratio 78 Chapter 3 Moving and changing materials 86 3.1 Explaining water movement 88 3.2 Required practical: Investigate the effect of a range of concentrations of salt or sugar solutions on the mass of plant tissue 90
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3.3 Learning about active transport 92 3.4 Key concept: Investigating the need for transport systems 94 3.5 Explaining enzymes 96 3.6 Required practical: Investigate the effect of pH on the rate of reaction of amylase enzyme 98 3.7 Learning about the digestive system 100 3.8 Explaining digestion 102 3.9 Required practical: Use qualitative reagents to test for a range of carbohydrates, lipids and proteins 104 3.10 Looking at more exchange surfaces 106 3.11 Learning about plants and minerals 108 3.12 Investigating how plants use minerals 110 3.13 Learning about the circulatory system 112 3.14 Exploring the heart 114 3.15 Studying blood 116 3.16 Investigating gas exchange 118 3.17 Learning about coronary heart disease 120 3.18 Maths skills: Extracting and interpreting information 122 Chapter 4 Health matters 128 4.1 Learning about health 130 4.2 Key concept: Looking at risk factors 132 4.3 Exploring non-communicable diseases 134 4.4 Analysing and evaluating data 136 4.5 Studying pathogens 138 4.6 Learning about viral diseases 140 4.7 Studying bacterial diseases 142 4.8 Looking at fungal diseases 144 4.9 Learning about malaria 146 4.10 Protecting the body 148 4.11 Exploring white blood cells 150 4.12 Using antibiotics and painkillers 152 4.13 Building immunity 154 4.14 Making new drugs 156 4.15 Investigating monoclonal antibodies 158 4.16 Looking at plant diseases 160 4.17 Learning about plant defences 162 4.18 Maths skills: Sampling and scientific data 164 Chapter 5 Coordination and control 170 5.1 Homeostasis 172 5.2 The nervous system 174 5.3 Reflex actions 176 5.4 The brain 178
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