Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.7.1 - Inheritance. Complete set of Chapter 7 Lectures are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.80 - Understand how organisms are able to respond to changes in their environment. Specification Point 2.81 - Understand that homeostasis is the maintenance of a constant internal environment, and that body water content and body temperature are both examples of homeostasis. Specification Point 2.82 - Understand that a coordinated response requires a stimulus, a receptor and an effector. Complete set of Chapter 4 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.83 - Understand that plants respond to stimuli. Specification Point 2.84 - Describe the geotropic and phototropic responses of roots and stems. Specification Point 2.85 - Understand the role of auxin in the phototropic response of stems. Complete set of Chapter 4 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.93 - Describe the role of the skin in temperature regulation, with reference to sweating, vasoconstriction and vasodilation. Complete set of Chapter 4 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.95B - Understand the sources, roles and effects of the following hormones: ADH, FSH and LH. Complete set of Chapter 4 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: 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 1 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.23 - Practical: Investigate photosynthesis, showing the evolution of oxygen from a water plant, the production of starch and the requirements of light, carbon dioxide and chlorophyll. Complete set of Chapter 2 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.33B - Practical: Investigate the energy content in a food sample. Complete set of Chapter 2 Lessons 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

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.

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.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 4.10 - Describe the stages in the carbon cycle, including respiration, photosynthesis, decomposition and combustion. Complete set of Chapter 6 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 5.17B - Describe the process of micropropagation (tissue culture) in which explants are grown in vitro. Specification Point 5.18B - Understand how micropropagation can be used to produce commercial quantities of genetically identical plants with desirable characteristics. Specification Point 5.19B - Describe the stages in the production of cloned mammals involving the introduction of a diploid nucleus from a mature cell into an enucleated egg cell, illustrated by Dolly the sheep. Complete set of Chapter 7 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 5.10 - Understand how selective breeding can develop plants with desired characteristics. Specification Point 5.11 - Understand how selective breeding can develop animals with desired characteristics. Complete set of Chapter 7 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.65 - Describe the structure of the heart and how it functions. Specification Point 2.66 - Explain how the heart rate changes during exercise and under the influence of adrenaline. Specification Point 2.67 - Understand how factors may increase the risk of developing coronary heart disease. Complete set of Chapter 3 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.72B - Understand how the kidney carries out its roles of excretion and osmoregulation. Specification Point 2.73B - Describe the structure of the urinary system, including the kidneys, ureters, bladder and urethra. Specification Point 2.74B - Describe the structure of a nephron, including the Bowman’s capsule and glomerulus, convoluted tubules, loop of Henle and collecting duct. Specification Point 2.75B - Describe ultrafiltration in the Bowman’s capsule and the composition of the glomerular filtrate. Specification Point 2.77B - Understand why selective reabsorption of glucose occurs at the proximal convoluted tubule. Specification Point 2.76B - Understand how water is reabsorbed into the blood from the collecting duct. Specification Point 2.78B - Describe the role of ADH in regulating the water content of the blood. Specification Point 2.79B - Understand that urine contains water, urea and ions. Complete set of Chapter 4 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 4.12 -Understand the biological consequences of pollution of air by sulfur dioxide and carbon monoxide. Specification Point 4.13 - Understand that water vapour, carbon dioxide, nitrous oxide, methane and CFCs are greenhouse gases. Specification Point 4.14 - Understand how human activities contribute to greenhouse gases. Specification Point 4.15- Understand how an increase in greenhouse gases results in an enhanced greenhouse effect and that this may lead to global warming and its consequences. Specification Point 4.16 - Understand the biological consequences of pollution of water by sewage. Specification Point 4.17 - Understand the biological consequences of eutrophication caused by leached minerals from fertilizer. Complete set of Chapter 6 Lessons are available.

A useful resource for students to practice their knowledge and examination technique for future external assessments. This is for the following paper: 4BI1 - 1B These questions are completely original and have been designed from scratch. There has been no reuse of previous exam questions. Our mock paper follows the format of the true Edexcel IGCSE Biology 1B paper closely, with the CORMS and graph question included. It is also the exact duration and mark-count, with questions of increasing difficulty. A mark scheme is also attached. The paper covers the following specification points: • Topic 2d Movement of substances into and out of cells (including practical 2.17 (2.15 – 2.17) • Topic 2g Gas exchange (including practical 2.50) (2.46 – 2.50) • Topic 2h Transport (2.51 – 2.54, 2.59 – 2.62, 2.65 – 2.69) • Topic 2j Co-ordination and response (2.80 – 2.94) • Topic 3a Reproduction (3.1 – 3.9, 3.11 – 3.13) • Topic 3b Inheritance (3.14 – 3.15, 3.19 – 3.20, 3.22 – 3.34, 3.38 – 3.39) • Topic 5b Selective breeding (5.10 – 5.11) Disclaimer: This document was created by department heads with many years of experience teaching the Pearson Edexcel IGCSE Biology course. We cannot however guarantee that it is an accurate representation of upcoming examinations and students should not treat it as such. Please use this as an aid, alongside other methods of revision.

Complete set of concise, modern presentations for AQA GCSE Biology (8461) Chapter 4 - Bioenergetics. Contains colour coded specification points with handmade vector graphics. Three presentations included: 19 - Photosynthesis 20 - The Rate of Photosynthesis 21 - Respiration

Back by popular demand for a third year! Our heads of department have once again been hard at work to create a series of predicted exams for Summer 2024! This is for the following paper: 4BI1 - 2B These questions are completely original and have been designed from scratch. There has been no reuse of previous exam questions. Our mock paper follows the format of the true Edexcel IGCSE Biology 2B paper closely. The obligatory comprehension question is also included. A mark scheme is also attached. The paper covers the following specification points: • Topic 2e - Nutrition (2.25 - 2.28) • Topic 2i - Excretion (2.72B - 2.76B) • Topic 2j - Coordination and response (2.83 - 2.92) • Topic 3a - Reproduction (3.3 - 3.7) • Topic 3b - Inheritance (3.16B - 3.18B) • Topic 4c - Cycles within ecosystems (4.11B - 4.15) • Topic 5a - Food production (5.9B) • Topic 5d - Cloning (5.17B - 5.18B) Disclaimer: This document was created by department heads with many years of experience teaching the Pearson Edexcel IGCSE Biology course. We cannot however guarantee that it is an accurate representation of the 2024 examinations and students should not treat it as such. Please use this as an aid, alongside other methods of revision.