New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019 This is a PowerPoint presentation for the topic - Section 2g Gas Exchange - Humans 2.46 describe the structure of the thorax, including the ribs, intercostal muscles, diaphragm, trachea, bronchi, bronchioles, alveoli and pleural membranes 2.47 understand the role of the intercostal muscles and the diaphragm in ventilation 2.48 explain how alveoli are adapted for gas exchange by diffusion between air in the lungs and blood in capillaries 2.49 understand the biological consequences of smoking in relation to the lungs and the circulatory system, including coronary heart disease 2.50 practical: investigate breathing in humans, including the release of carbon dioxide and the effect of exercise The file is fully editable, has plenty of original diagrams and animations along with true false concept check questions at the end of the presentation and an exam style question.

New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019 This is a PowerPoint presentation for the topic - Section 2g Gas Exchange - Flowering Plants 2.40B understand the role of diffusion in gas exchange 2.41B understand gas exchange (of carbon dioxide and oxygen) in relation to respiration and photosynthesis 2.42B understand how the structure of the leaf is adapted for gas exchange 2.43B describe the role of stomata in gas exchange 2.44B understand how respiration continues during the day and night, but that thenet exchange of carbon dioxide and oxygen depends on the intensity of light 2.45B practical: investigate the effect of light The file is fully editable, has plenty of original diagrams and animations along with true false concept check questions at the end of the presentation and an exam style question.

New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019 This is a PowerPoint presentation for the topic - Section 2f Respiration 2.34 understand how the process of respiration produces ATP in living organisms 2.35 know that ATP provides energy for cells 2.36 describe the differences between aerobic and anaerobic respiration 2.37 know the word equation and the balanced chemical symbol equation for aerobic respiration in living organisms 2.38 know the word equation for anaerobic respiration in plants and in animals 2.39 practical: investigate the evolution of carbon dioxide and heat from respiring seeds or other suitable living organisms The file is fully editable, has plenty of original diagrams and animations along with true false concept check questions at the end of the presentation and an exam style question.

New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019 This is a PowerPoint presentation for the topic - Section 2e Nutrition - Humans 2.24 Understand that a balanced diet should include appropriate proportions of carbohydrate, protein, lipid, vitamins, minerals, water and dietary fibre. 2.25 Identify the sources and describe the functions of carbohydrate, protein, lipid (fats and oils), vitamins A, C and D, the mineral ions calcium and iron, water and dietary fibre as components of the diet. 2.26 Understand how energy requirements vary with activity levels, age and pregnancy. 2.27 Describe the structure and function of the human alimentary canal, including the mouth, oesophagus, stomach, small intestine (duodenum and ileum), large intestine (colon and rectum) and pancreas. 2.28 Understand how food is moved through the gut by peristalsis. 2.29 Understand the role of digestive enzymes, including the digestion of starch to glucose by amylase and maltase, the digestion of proteins to amino acids by proteases and the digestion of lipids to fatty acids and glycerol by lipases. 2.30 Understand that bile is produced by the liver and stored in the gall bladder. 2.31 Understand the role of bile in neutralising stomach acid and emulsifying lipids. 2.32 Understand how the small intestine is adapted for absorption, including the structure of a villus. 2.33B Practical: investigate the energy content in a food sample. The file is fully editable, has plenty of original diagrams and animations along with true false concept check questions at the end of the presentation and an exam style question.

New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019 This is a PowerPoint presentation for the topic - Section 2e Nutrition - Flowering Plants 2.18 understand the process of photosynthesis and its importance in the conversion of light energy to chemical energy 2.19 know the word equation and the balanced chemical symbol equation for photosynthesis 2.20 understand how varying carbon dioxide concentration, light intensity and temperature affect the rate of photosynthesis 2.21 describe the structure of the leaf and explain how it is adapted for photosynthesis 2.22 understand that plants require mineral ions for growth, and that magnesium ions are needed for chlorophyll and nitrate ions are needed for amino acids 2.23 practical: investigate photosynthesis, showing the evolution of oxygen from a water plant, the production The file is fully editable, has plenty of original diagrams and animations along with true false concept check questions at the end of the presentation and an exam style question.

New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019 This is a PowerPoint presentation for the topic - Section 2d Movement of substances in and out of cells 2.15 Understand the processes of diffusion, osmosis and active transport by which substances move into and out of cells. 2.16 Understand how factors affect the rate of movement of substances into and out of cells, including the effects of surface area to volume ratio, distance, temperature and concentration gradient. 2.17 Practical: investigate diffusion and osmosis using living and non-living systems. The file is fully editable, has plenty of original diagrams and animations along with true false concept check questions at the end of the presentation and an exam style question.

New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019 This is a PowerPoint presentation for the first topic - Section 2c Biological Molecules Section 2c Biological Molecules 2.7 Identify the chemical elements present in carbohydrates, proteins and lipids (fats and oils). 2.8 Describe the structure of carbohydrates, proteins and lipids as large molecules made up from smaller basic units: starch and glycogen from simple sugars, protein from amino acids, and lipid from fatty acids and glycerol. 2.9 Practical: investigate food samples for the presence of glucose, starch, protein and fat. 2.10 Understand the role of enzymes as biological catalysts in metabolic reactions. 2.11 Understand how temperature changes can affect enzyme function, including changes to the shape of active site. 2.12 Practical: investigate how enzyme activity can be affected by changes in temperature. 2.13 Understand how enzyme function can be affected by changes in pH altering the active site. 2.14B Practical: investigate how enzyme activity can be affected by changes in pH. (In orange) The file is fully editable, has plenty of original diagrams and animations along with true false concept check questions at the end of the presentation and an exam style question.

New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019 This is a PowerPoint presentation for the first topic - Section 2b Cell Structure Section 2b Cell Structure 2.2 describe cell structures, including the nucleus, cytoplasm, cell membrane, cell wall, mitochondria, chloroplasts, ribosomes and vacuole 2.3 describe the functions of the nucleus, cytoplasm, cell membrane, cell wall, mitochondria, chloroplasts, ribosomes and vacuole 2.4 know the similarities and differences in the structure of plant and animal cells 2.5B explain the importance of cell differentiation in the development of specialised cells 2.6B understand the advantages and disadvantages of using stem cells in medicine The file is fully editable, has plenty of original diagrams and animations along with true false concept check questions at the end of the presentation and an exam style question.

New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019 This is a PowerPoint presentation for the topic - Section 2a Levels of organisation 2.1 describe the levels of organisation in organisms: organelles, cells, tissues, organs and systems The file is fully editable, has plenty of original diagrams and animations along with true false concept check questions at the end of the presentation and an exam style question.

New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019 This is a PowerPoint presentation for the first topic - Section 1b Variety of Living Things 1.2 Describe the common features shown by eukaryotic organisms: plants, animals, fungi and protoctists. 1.3 Describe the common features shown by prokaryotic organisms such as bacteria. 1.4 Understand the term pathogen and know that pathogens may include fungi, bacteria, protoctists or viruses. The file is fully editable, has plenty of original diagrams and animations along with true false concept check questions at the end of the presentation and an exam style question.

New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019 This is a PowerPoint presentation for the first topic - Section 1a Characteristics of Living Organisms 1.1 understand how living organisms share the following characteristics: • they require nutrition • they respire • they excrete their waste • they respond to their surroundings • they move • they control their internal conditions • they reproduce • they grow and develop. The file is fully editable, has plenty of original diagrams and animations along with true false concept check questions at the end of the presentation and an exam style question.