Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 5.5 - Understand the role of yeast in the production of food including bread. Specification Point 5.6 - Practical: investigate the role of anaerobic respiration by yeast in different conditions. Specification Point 5.7 - Understand the role of bacteria (Lactobacillus) in the production of yoghurt. Specification Point 5.8 - Understand the use of an industrial fermenter and explain the need to provide suitable conditions in the fermenter, including aseptic precautions, nutrients, optimum temperature and pH, oxygenation and agitation, for the growth of microorganisms. 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.

Complete set of concise, modern presentations for AQA GCSE Biology (8461) Chapter 2 - Organisation. Contains colour coded specification points with handmade vector graphics. Eight presentations included: 6 - Organisation 7 - Enzymes 8 - Digestion and Food Tests 9 - The Circulatory System 10 - Blood Vessels 11 - Coronary Heart Disease 12 - Health and Disease 13 - Plant Tissues

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.3.1.1 - Communicable diseases. Specification Point 4.3.1.2 - Viral diseases. Specification Point 4.3.1.3 - Bacterial diseases. Specification Point 4.3.1.4 - Fungal diseases. Specification Point 4.3.1.5 - Protist diseases. Complete set of Chapter 3 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.3.1.6 - Human defence systems. Specification Point 4.3.1.7 - Vaccination. Complete set of Chapter 3 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.3.3.1 - Detection and identification of plant diseases. Specification Point 4.3.3.2 - Plant defence responses. Complete set of Chapter 3 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.4.1.2 - Rate of photosynthesis. Complete set of Chapter 4 Lectures are available.

Complete set of concise, modern presentations for AQA GCSE Biology (8461) Chapter 3 - Infection and Response. Contains colour coded specification points with handmade vector graphics. Five presentations included: 14 - Communicable Diseases 15 - Fighting Disease 16 - Drugs for Medicine 17 - Monoclonal Antibodies 18 - Disease in Plants

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.2.3.1 - Plant tissues. Specification Point 4.2.3.2 - Plant organ systems. Complete set of Chapter 2 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.5.3.4 - Hormones in human reproduction. Specification Point 4.5.3.5 - Contraception. Specification Point 4.5.3.6 - The use of hormones to treat infertility. Specification Point 4.5.3.7 - Negative feedback. Complete set of Chapter 5 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.5.3.3 - Maintaining water and nitrogen balance in the body. Complete set of Chapter 5 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.5.4.1 - Control and coordination regarding plant hormones. Required Practical 8 - Investigating the effect of light on the growth of newly germinated seedlings. Specification Point 4.5.4.2 - Use of plant hormones. Complete set of Chapter 5 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.5.3.1 - The human endocrine system. Specification Point 4.5.3.2 - Control of blood glucose concentration. Complete set of Chapter 5 Lectures are available.

The original and still the best! For a fourth year running, our heads of department have been hard at work to create a series of predicted exams for Summer 2025! 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 1b - Variety of living organisms (1.2 - 1.4) • Topic 2c - Biological molecules (2.7 - 2.11) • Topic 2e - Nutrition (2.18 - 2.20) • Topic 2h - Transport (2.59 - 2.62) • Topic 2j - Co-ordination and response (2.90) • Topic 3a - Reproduction (3.8 - 3.9) • Topic 3b - Inheritance (3.19 - 3.23, 3.38) • Topic 4b - Feeding relationships (4.6) • Topic 4d - Human influences on the environment (4.16) • Topic 5a - Food production (5.2 - 5.4) • Topic 5b - Selective breeding (5.10 - 5.11) • Topic 5c - Genetic modification (5.12 - 5.14) 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 2025 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 5 - Homeostasis and Response. Contains colour coded specification points with handmade vector graphics. Eight presentations included: 22 - The Nervous System 23 - The Brain 24 - The Eye 25 - Homeostasis and Thermoregulation 26 - The Endocrine System 27 - The Kidneys 28 - Puberty and the Menstrual Cycle 29 - Plant Hormones

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.6.1.4 - DNA and the genome. Complete set of Chapter 6 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.6.2.4 - Genetic engineering. Specification Point 4.6.2.5 - Cloning. Complete set of Chapter 6 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.6.2.1 - Variation. Specification Point 4.6.2.2 - Evolution. Specification Point 4.6.3.1 - Theory of evolution. Complete set of Chapter 6 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.6.1.1 - Sexual and asexual reproduction. Specification Point 4.6.1.2 - Meiosis. Specification Point 4.6.1.3 - Advantages and disadvantages of sexual and asexual reproduction. Complete set of Chapter 6 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.6.1.6 - Genetic inheritance. Specification Point 4.6.1.7 - Inherited disorders. Specification Point 4.6.1.8 - Sex determination. Specification Point 4.6.3.3 - The understanding of genetics. Complete set of Chapter 6 Lectures are available.