Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.3.1 - Surface area to volume ratio. Complete set of Chapter 3 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 2.34 - Understand how the process of respiration produces ATP in living organisms. Specification Point 2.35 - Know that ATP provides energy for cells. Specification Point 2.36 - Describe the differences between aerobic and anaerobic respiration. Specification Point 2.37 - Know the word equation and the balanced chemical symbol equation for aerobic respiration in living organisms. Specification Point 2.38 - Know the word equation for anaerobic respiration in plants and in animals. Specification Point 2.39 - Practical: investigate the evolution of carbon dioxide and heat from respiring seeds or other suitable living organisms. Complete set of Chapter 2 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 2.86 - Describe how nervous and hormonal communication control responses and understand the differences between the two systems. Specification Point 2.87 - Understand that the central nervous system consists of the brain and spinal cord and is linked to sense organs by nerves. Specification Point 2.88 - Understand that stimulation of receptors in the sense organs sends electrical impulses along nerves into and out of the central nervous system, resulting in rapid responses. Specification Point 2.89 - Understand the role of neurotransmitters at synapses. Complete set of Chapter 4 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.6.1.3 - Control of heart rate. Complete set of Chapter 6 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.4.5 - Species and taxonomy. Complete set of Chapter 4 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.14 - Understand that the genome is the entire DNA of an organism and that a gene is a section of a molecule of DNA that codes for a specific protein. Specification Point 3.15 -Understand that the nucleus of a cell contains chromosomes on which genes are located. Complete set of Chapter 5 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 5.12 - Understand how restriction enzymes are used to cut DNA at specific sites and ligase enzymes are used to join pieces of DNA together. Specification Point 5.13 - Understand how plasmids and viruses can act as vectors, which take up pieces of DNA, and then insert this recombinant DNA into other cells. Specification Point 5.14 - Understand how large amounts of human insulin can be manufactured from genetically modified bacteria that are grown in a fermenter. Specification Point 5.15 - Understand how genetically modified plants can be used to improve food production. Specification Point 5.16 - Understand that the term transgenic means the transfer of genetic material from one species to a different species. Complete set of Chapter 7 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 2.55B -Understand how water is absorbed by root hair cells. Specification Point 2.56B -Understand that transpiration is the evaporation of water from the surface of a plant. Specification Point 2.57B -Understand how the rate of transpiration is affected by changes in humidity, wind speed, temperature and light intensity. Specification Point 2.58B - Practical: investigate the role of environmental factors in determining the rate of transpiration from a leafy shoot. Complete set of Chapter 3 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.1.1.1 - Eukaryotes and prokaryotes. Specification Point 4.1.1.2 - Animal and plant cells. Specification Point 4.1.1.5 - Microscopy. Practical 1 - Use a light microscope to investigate a selection of plant and animal cells. Complete set of Chapter 1 Lectures 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.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.46 - Describe the structure of the thorax, including the ribs, intercostal muscles, diaphragm, trachea, bronchi, bronchioles, alveoli and pleural membranes. Specification Point 2.47 - Understand the role of the intercostal muscles and the diaphragm in ventilation. Complete set of Chapter 3 Lessons are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.2.2.5 - Health issues. Specification Point 4.2.2.6 - The effect of lifestyle on some non-communicable diseases. Specification Point 4.2.2.7 - Cancer. Complete set of Chapter 2 Lectures are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Points 2.34 and 2.35 - Understand how the process of respiration produces ATP in living organisms. Know that ATP provides energy for cells. Specification Points 2.36 and 2.37 - Describe the differences between aerobic and anaerobic respiration. Know the word equation and the balanced chemical symbol equation for aerobic respiration in living organisms. Specification Point 2.38 - Know the word equation for anaerobic respiration in plants and in animals. Specification Point 2.39 - Practical: investigate the evolution of carbon dioxide and heat from respiring seeds or other suitable living organisms. Complete set of Chapter 2 Lessons are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.1.1 - Monomers and polymers. Complete set of Chapter 1 Lectures are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 1.1 - Understand how living organisms share certain characteristics. 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.

Companion PDF worksheet for Edexcel IGCSE Biology Lecture 41 - DNA, Genes and Chromosomes. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 3.14 - Understand that the genome is the entire DNA of an organism and that a gene is a section of a molecule of DNA that codes for a specific protein. Specification Point 3.15 - Understand that the nucleus of a cell contains chromosomes on which genes are located. Complete set of Chapter 5 Worksheets are available.

Companion PDF worksheet for Edexcel IGCSE Biology Lecture 13 - Human Nutrition. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 2.24 - Understand that a balanced diet should include appropriate proportions of carbohydrate, protein, lipid, vitamins, minerals, water and dietary fibre. Specification Point 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. Specification Point 2.26 - Understand how energy requirements vary with activity levels, age and pregnancy. Complete set of Chapter 2 Worksheets are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.3.2.1 - Producing monoclonal antibodies. Specification Point 4.3.2.2 - Uses of monoclonal antibodies. Complete set of Chapter 3 Lectures are available.

Companion PDF worksheet for Edexcel IGCSE Biology Lecture 44 - Genetic Diagrams. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 3.22 - Understand that most phenotypic features are the result of polygenic inheritance rather than single genes. Specification Point 3.23 - Describe patterns of monohybrid inheritance using a genetic diagram. Specification Point 3.24 - Understand how to interpret family pedigrees. Specification Point 3.25 - Predict probabilities of outcomes from monohybrid crosses. Specification Point 3.26 - Understand how the sex of a person is controlled by one pair of chromosomes, XX in a female and XY in a male. Specification Point 3.27 - Describe the determination of the sex of offspring at fertilisation, using a genetic diagram. Complete set of Chapter 5 Worksheets are available.