Companion PDF worksheet for Edexcel IGCSE Biology Lecture 11 - The Leaf. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 2.21 - Describe the structure of the leaf and explain how it is adapted for photosynthesis. Specification Point 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. Complete set of Chapter 2 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.18 - Understand the process of photosynthesis and its importance to the conversion of light energy into chemical energy. Specification Point 2.19 - Know the word equation and balanced chemical symbol equation for photosynthesis. Specification Point 2.20 - Understand how varying carbon dioxide concentration, light intensity and temperature affect the rate of photosynthesis. Complete set of Chapter 2 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Biology Lecture 10 - Nutrition in Plants. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 2.18 - Understand the process of photosynthesis and its importance to the conversion of light energy into chemical energy. Specification Point 2.19 - Know the word equation and balanced chemical symbol equation for photosynthesis. Specification Point 2.20 - Understand how varying carbon dioxide concentration, light intensity and temperature affect the rate of photosynthesis. Complete set of Chapter 2 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.15 - Understand the processes of diffusion, osmosis and active transport by which substances move into and out of cells. Specification Point 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. Specification Point 2.17 - Practical: Investigate diffusion and osmosis using living and non-living systems. Complete set of Chapter 1 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Biology Lecture 9 - Movement Across Membranes. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 2.15 - Understand the processes of diffusion, osmosis and active transport by which substances move into and out of cells. Specification Point 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. Specification Point 2.17 - Practical: Investigate diffusion and osmosis using living and non-living systems. Complete set of Chapter 1 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.14B - Practical: Investigate how enzyme activity can be affected by changes in pH. Complete set of Chapter 1 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Biology Lecture 8 - Enzymes and pH. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 2.14B - Practical: Investigate how enzyme activity can be affected by changes in pH. Complete set of Chapter 1 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.10 - Understand the role of enzymes as biological catalysts in metabolic reactions. Specification Point 2.11 - Understand how temperature changes can affect enzyme function, including changes to the shape of the active site. Specification Point 2.12 - Practical: Investigate how enzyme activity can be affected by changes in temperature. Specification Point 2.13 - Understand how enzyme function can be affected by changes in pH altering the active site. Complete set of Chapter 1 Lessons are available

Companion PDF worksheet for Edexcel IGCSE Biology Lecture 7 - Enzymes. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 2.10 - Understand the role of enzymes as biological catalysts in metabolic reactions. Specification Point 2.11 - Understand how temperature changes can affect enzyme function, including changes to the shape of the active site. Specification Point 2.12 - Practical: Investigate how enzyme activity can be affected by changes in temperature. Specification Point 2.13 - Understand how enzyme function can be affected by changes in pH altering the active site. Complete set of Chapter 1 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.9 - Practical: Investigate food samples for the presence of glucose, starch, protein and fat. Complete set of Chapter 1 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Biology Lecture 6 - Food Tests. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 2.9 - Practical: Investigate food samples for the presence of glucose, starch, protein and fat. Complete set of Chapter 1 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.7 - Identify the chemical elements present in carbohydrates, proteins and lipids. Specification Point 2.8 - Describe the structure of carbohydrates, proteins and lipids as large molecules made up from smaller basic units. Complete set of Chapter 1 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Biology Lecture 5 - Biological Molecules. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Covers the following in a modern, concise format: Specification Point 2.7 - Identify the chemical elements present in carbohydrates, proteins and lipids. Specification Point 2.8 - Describe the structure of carbohydrates, proteins and lipids as large molecules made up from smaller basic units. Complete set of Chapter 1 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.5B - Explain the importance of cell differentiation in the development of specialised cells. Specification Point 2.6B - Understand the advantages and disadvantages of using stem cells in medicine. Complete set of Chapter 1 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Biology Lecture 4 - Cell Differentiation. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Covers the following in a modern, concise format: Specification Point 2.5B - Explain the importance of cell differentiation in the development of specialised cells. Specification Point 2.6B - Understand the advantages and disadvantages of using stem cells in medicine. Complete set of Chapter 1 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.1 - Describe the level of organisation in organisms: organelles, cells, tissues, organs and organ systems. Specification Point 2.2/2.3 - Describe the structures and functions of the cell’s organelles, including the nucleus, cytoplasm, cell membrane, cell wall, mitochondria, chloroplast, ribosome and vacuole. Specification Point 2.4 - Know the similarities and differences in the structure of plant and animal cells. Complete set of Chapter 1 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Biology Lecture 3 - Organisation and Cell Structure. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Covers the following in a modern, concise format: Specification Point 2.1 - Describe the level of organisation in organisms: organelles, cells, tissues, organs and organ systems. Specification Point 2.2/2.3 - Describe the structures and functions of the cell’s organelles, including the nucleus, cytoplasm, cell membrane, cell wall, mitochondria, chloroplast, ribosome and vacuole. Specification Point 2.4 - Know the similarities and differences in the structure of plant and animal cells. Complete set of Chapter 1 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 1.2 - Describe the common features shown by eukaryotic organisms: plants, animals, fungi and protoctista. Specification Point 1.3 - Describe the common features shown by prokaryotic organisms such as bacteria. Specification Point 1.4 - Understand the term pathogen and know that pathogens may include the following: fungi, bacteria, protoctista and viruses. Complete set of Chapter 1 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Biology Lecture 2 - Variety of Living Organisms. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Covers the following in a modern, concise format: Specification Point 1.2 - Describe the common features shown by eukaryotic organisms: plants, animals, fungi and protoctista. Specification Point 1.3 - Describe the common features shown by prokaryotic organisms such as bacteria. Specification Point 1.4 - Understand the term pathogen and know that pathogens may include the following: fungi, bacteria, protoctista and viruses. Complete set of Chapter 1 Worksheets are available.