Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.2.1.2 - Structure of prokaryotic cells and of viruses. Complete set of Chapter 2 Lectures are available.

Complete set of concise, modern presentations for AQA A Level Biology (7401 and 7402) Chapter 1 - Biological Molecules. Contains colour coded specification points. Eight presentations included: 1 - Monomers and Polymers 2 - Carbohydrates 3 - Lipids 4 - Proteins 5 - Enzymes 6 - Factors Affecting Enzymes 7 - DNA and RNA 8 - ATP, Water and Inorganic Ions

Companion PDF worksheet for Edexcel IGCSE Biology Lecture 40 - Evolution. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 3.38 - Explain Darwin’s theory of evolution by natural selection. Specification Point 3.39 - Understand how resistance to antibiotics can increase in bacterial populations, and appreciate how such an increase can lead to infections being difficult to control. Complete set of Chapter 5 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 3.28 - Understand how division of a diploid cell by mitosis produces two cells that contain identical sets of chromosomes. Specification Point 3.29 - Understand that mitosis occurs during growth, repair, cloning and asexual reproduction. Specification Point 3.30 - Understand how division of a cell by meiosis produces four cells, each with half the number of chromosomes, and that this results in the formation of genetically different haploid gametes. Complete set of Chapter 5 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 3.38 - Explain Darwin’s theory of evolution by natural selection. Specification Point 3.39 - Understand how resistance to antibiotics can increase in bacterial populations, and appreciate how such an increase can lead to infections being difficult to control. Complete set of Chapter 5 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Biology Lecture 38 - Human Reproduction and the Menstrual Cycle. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 3.8 - Understand how the structure of the male and female reproductive systems are adapted for their functions. Specification Point 3.9 - Understand the roles of oestrogen and progesterone in the menstrual cycle. Complete set of Chapter 5 Worksheets are available.

Complete set of PDF worksheets for Edexcel IGCSE Biology (4BI0) Chapter 5 - Reproduction and Inheritance. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. All questions are original. Thirteen worksheets included: 36 - Reproduction 37 - Reproduction in Plants 38 - Human Reproductive Systems and the Menstrual Cycle 39 - FSH and LH 40 - Pregnancy and Puberty 41 - DNA, Genes and Chromosomes 42 - Nucleic Acids 43 - Inheritance and Codominance 44 - Genetic Diagrams 45 - Cell Division 46 - Variation in a Species 47 - Mutations 48 - Evolution

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 3.11 - Describe the role of the placenta in the nutrition of the developing embryo. Specification Point 3.12 - Understand how the developing embryo is protected by amniotic fluid. Specification Point 3.13 - Understand the roles of oestrogen and testosterone in the development of secondary sexual characteristics. Complete set of Chapter 5 Lessons are available.

Complete set of concise, modern presentations for AQA A Level Biology (7401 and 7402) Chapter 6 - The Response of Organisms. Contains colour coded specification points. Eight presentations included: 42 - Survival and Response 43 - Receptors and Effectors 44 - The Control of Heart Rate 45 - Nerves and Synapses 46 - Muscles 47 - Homeostasis 48 - Controlling Blood Glucose 49 - The Kidneys

Powerpoint lecture covering the following in a modern, concise format: Specification Point 1.3 - Understand the reasons for variations in water quality, including pollution, and the storage and supply of clean water. Complete set of Chapter 1 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 5.3 - Understand the range of possible strategies aimed at making rural living more sustainable and improving the quality of life for the chosen rural environment. Complete set of Chapter 6 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 5.3 - Understand the role of different groups of people in managing the social, economic and environmental challenges within the chosen rural environment. Complete set of Chapter 6 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.1.1 - Social influence. Explanations of resistance to social influence, including social support and locus of control. Minority influence including reference to consistency, commitment and flexibility. The role of social influence processes in social change. Complete set of Chapter 1 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.1.1 - Social influence. Explanations for obedience: agentic state and legitimacy of authority, and situational variables affecting obedience including proximity and location, as investigated by Milgram. Dispositional explanation for obedience: the authoritarian personality. Complete set of Chapter 1 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 6.3 - Understand the development of the rural-urban fringe: housing estates, retail, business and science parks, industrial estates, and the greenfield versus brownfield debate. Complete set of Chapter 7 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 5.1 - Understand examples of goods and services provided for people by natural ecosystems (timber, tourism, food, energy, water resources, health services, natural protection and climate regulation). Specification Point 5.1 - Understand how humans use, modify and change ecosystems and rural environments to obtain food through farming systems (arable/pastoral, commercial/subsistence, intensive/extensive). Complete set of Chapter 6 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 6.3 - Understand the role of different groups of people (planners, politicians, property developers and industrialists) in managing the social, economic and environmental challenges in the chosen urban area. Complete set of Chapter 7 Lectures are available.

Companion PDF worksheet for Edexcel IGCSE Chemistry Lecture 21 - Acids and Alkalis. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 2.28 - Describe the use of litmus, phenolphthalein and methyl orange to distinguish between acidic and alkaline solutions. Specification Point 2.29 - Understand how the pH scale can be used to classify solutions as strongly acidic, weakly acidic, neutral, weakly alkaline and strongly alkaline. Specification Point 2.30 - Describe the use of universal indicator to measure the approximate pH value of an aqueous solution. Specification Point 2.31 - Know that acids in aqueous solution are a source of hydrogen ions and alkalis in a aqueous solution are a source of hydroxide ions. Specification Point 2.32 - Know that alkalis can neutralise acids. Complete set of Chapter 5 Worksheets are available.

Companion PDF worksheet for Edexcel IGCSE Chemistry Lecture 23 - Acids, Bases and Salts. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 2.34 - Know the general rules for predicting the solubility of ionic compounds in water. Specification Point 2.35 - Understand acids and bases in terms of proton transfer. Specification Point 2.36 - Understand that an acid is a proton donor and a base is a proton acceptor. Specification Point 2.37 - Describe the reactions of hydrochloric acid, sulfuric acid and nitric acid with metals, bases and metal carbonates to form salts. Specification Point 2.38 - Know that metal oxides, metal hydroxides and ammonia can act as bases, and that alkalis are bases that are soluble in water. Specification Point 2.39 - Describe an experiment to prepare a pure, dry sample of a soluble salt, starting from an insoluble reactant. Specification Point 2.42 - Practical: prepare a sample of pure, dry hydrated copper (II) sulphate crystals starting from copper (II) oxide. Complete set of Chapter 5 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 1.34C - Understand how to carry out calculations involving amount of substance, volume and concentration of solution. Specification Point 1.35C - Understand how to carry out calculations involving gas volumes and the molar volume of a gas. Complete set of Chapter 2 Lessons are available.