This bundle of 14 lessons covers the majority of the content in Topic B6 (Inheritance, Variation and Evolution) of the AQA Trilogy GCSE Combined Science specification. The topics covered within these lessons include: DNA Reproduction Meiosis X and Y chromosomes Genetic diagrams Inherited disorders Variation Evolution Selective breeding Genetic engineering Fossils Antibiotic-resistant bacteria Classification All of these lesson presentations and accompanying resources are detailed and engaging and contain regular progress checks to allow the students to constantly assess their understanding.

This bundle of 13 lessons covers the majority of the content in Topic B2 (Scaling Up) of the OCR Gateway A GCSE Combined Science & GCSE Biology specifications. The topics covered within these lessons include: Mitosis Cell differentiation Cell specialisation Stem cells Diffusion Osmosis Active transport Exchange surfaces The heart in the circulatory system The blood and blood vessels Plant transport systems Transpiration All of these lesson presentations and accompanying resources are detailed and engaging and contain regular progress checks to allow the students to constantly assess their understanding.

This bundle of 11 lessons covers the majority of the content in the sub-topic B6.3 (Monitoring and maintaining health) of the OCR Gateway A GCSE Combined Science specification. The topics and specification points covered within these lessons include: The relationship between health and disease Different types of diseases The interactions between different types of diseases The spread of communicable diseases Reducing and preventing the spread of communicable diseases The role of white blood cells and platelets in defence The non-specific defence systems The role of the immune system in the defence against disease The use of vaccines and medicines in the prevention and treatment of disease The discovery and development of potential new medicines Risk factors and non-communicable diseases Treatments for CVD Stem cells in medicine All of these lesson presentations and accompanying resources are detailed and engaging and contain regular progress checks to allow the students to constantly assess their understanding.

This bundle contains 17 fully-resourced lessons which have been designed to cover the content as detailed in topic 7 (Run for your life) of the Pearson Edexcel A-Level Biology A (Salters Nuffield) specification. The specification points that are covered within these lessons include: The interaction of muscles, tendons, ligaments and the skeleton in movement The contraction of skeletal muscle by the sliding filament theory The overall reaction of aerobic respiration The enzymes involved in the multi-stepped process of respiration The roles of glycolysis in aerobic and anaerobic respiration The role of the link reaction and the Krebs cycle in the complete oxidation of glucose Understand how ATP is synthesised by oxidative phosphorylation The fate of lactate after a period of anaerobic respiration The myogenic nature of cardiac muscle The coordination of the heart beat The use of ECGs to aid diagnosis Calculating cardiac output The control of heart rate by the medulla oblongata The control of ventilation rate The structure of a muscle fibre The structural and physiological differences between fast and slow twitch muscle fibres The meaning of negative and positive feedback control The principle of negative feedback in maintaining systems within narrow limits The importance of homeostasis to maintain the body in a state of dynamic equilibrium during exercise DNA transcription factors, including hormones The lessons have been planned so that they contain a wide range of activities and numerous understanding and prior knowledge checks so students can assess their progress against the current topic as well as be challenged to make links to other topics within topic 7 and earlier topics If you would like to see the quality of the lessons, download the link reaction and Krebs cycle, the fate of lactate,the using ECGs and transcription factors lessons as these have been uploaded for free

This bundle contains 15 lessons which are engaging and highly detailed in order to cover the difficult content as set out in topic 9 (Control systems) of the Edexcel A-level Biology B specification. The lesson PowerPoints and accompanying resources contain a wide variety of tasks which cover the following specification points: Homeostasis is the maintenance of a state of dynamic equilibrium The importance of maintaining pH, temperature and water potential in the body The meaning of negative feedback and positive feedback control The principles of hormone production by endocrine glands The two main modes of action in hormones The division of the autonomic nervous system into the sympathetic and parasympathetic systems The transport of sodium and potassium ions in a resting potential The formation of an action potential and the propagation along an axon Saltatory conduction The function of synapses The formation and effects of excitatory and inhibitory postsynaptic potentials The structure of the human retina The role of rhodopsin The distribution of rods and cone cells The control of heart rate by the autonomic nervous system The gross and microscopic structure of the kidney The production of urea in the liver and its removal from the blood by ultrafiltration Selective reabsorption in the proximal tubule Control of mammalian plasma concentration The differences between ectotherms and endotherms The regulation of temperature by endotherms If you would like to sample the quality of this lesson bundle, then download the homeostasis, resting and action potentials and the formation of urea and ultrafiltration lessons as these have been uploaded for free.

Respiration and photosynthesis are two of the most commonly-assessed topics in the terminal A-level exams but are often poorly understood by students. These 14 lessons have been intricately planned to contain a wide range of activities that will engage and motivate the students whilst covering the key detail to try to deepen their understanding and includes exam-style questions so they are fully prepared for these assessments. The following specification points in topics 12 and 13 of the CIE A-level Biology course are covered by these lessons: The need for energy in living organisms The features of ATP The synthesis of ATP by substrate-level phosphorylation in glycolysis and the Krebs cycle The roles of the coenzymes in respiration The synthesis of ATP through the electron transport chain in the mitochondria and chloroplasts The relative energy values of carbohydrates, lipids and proteins as respiratory substrates Determining the respiratory quotient from equations for respiration The four stages of aerobic respiration An outline of glycolysis When oxygen is available, pyruvate is converted into acetyl CoA in the link reaction The steps of the Krebs cycle Oxidative phosphorylation The relationship between the structure and function of the mitochondrion Distinguish between aerobic and anaerobic respiration in mammalian tissue and in yeast cells Anaerobic respiration generates a small yield of ATP and builds up an oxygen debt The products of the light-dependent stage are used in the Calvin cycle The structure of a chloroplast and the sites of the light-dependent and light-independent stages of photosynthesis The light-dependent stage of photosynthesis The three stages of the Calvin cycle The conversion of Calvin cycle intermediates to carbohydrates, lipids and amino acids Explain the term limiting factor in relation to photosynthesis Explain the effects of changes in light intensity, carbon dioxide concentration and temperature on the rate of photosynthesis Explain how an understanding of limiting factors is used to increase crop yields in protected environments Due to the detail of these lessons, it is estimated that it will take up to 2 months of allocated A-level teaching time to cover the detail included in the slides of these lessons If you would like to sample the quality of the lessons, download the roles of the coenzymes, the Krebs cycle and the products of the Calvin cycle lessons as these have been shared for free

Some of the key biological topics are covered in topic 2 of the Pearson Edexcel A-level Biology A (Salters Nuffield) course and include the transport of materials across cell membranes, DNA structure and replication, protein synthesis and monohybrid inheritance. In line with this, many hours of intricate planning have gone into the design of all of the 19 lessons that are included in this bundle to ensure that the content is covered in detail, understanding is constantly checked to immediately address misconceptions and that engagement is high. This is achieved through the wide variety of tasks in the PowerPoints and accompanying worksheets which include exam-style questions with clear answers, discussion points, differentiated tasks and quick quiz competitions. The following specification points are covered by the lessons within this bundle: The properties of gas exchange surfaces in living organisms Understand how the rate of diffusion is dependent on these properties and can be used in the calculation of the rate of diffusion by Fick’s law Adaptations of the mammalian lung for rapid gaseous exchange Structure and properties of cell membranes Simple and facilitated diffusion as methods of passive transport The involvement of ATP and carrier proteins in active transport, endocytosis and exocytosis The basic structure of mononucleotides The structures of DNA and RNA The process of protein synthesis The roles of the template strand, mRNA and tRNA The nature of the genetic code A gene is a sequence of bases on DNA that codes for the amino acid sequence of a polypeptide The basic structure of an amino acid The formation of polypeptides and proteins The primary, secondary, tertiary and quaternary structure of proteins Globular and fibrous proteins using haemoglobin and collagen as examples The mechanism of action and the specificity of enzymes Enzymes are biological catalysts that reduce activation energy The process of DNA replication Errors in DNA replication can give rise to mutations The meaning of key genetic terms Patterns of inheritance, in the context of monohybrid inheritance Understand how the expression of a gene mutation in people with cystic fibrosis impairs the functioning of the gaseous exchange, digestive and reproductive systems Understand the uses and implications of genetic screening and prenatal testing Due to the detail included in each of these lessons, it is estimated that it will take in excess of 2 months of allocated teaching time to cover the content. If you would like to see the quality of the lessons, download the gas exchange surfaces, cell membranes, transcription, globular and fibrous proteins, monohybrid inheritance and cystic fibrosis lessons as these have been shared for free

This bundle of 20 lessons covers the majority of the content that’s included in modules 5.1.1 - 5.1.4 of the OCR A-level Biology A specification. All of the lessons are highly detailed and have been planned at length to ensure that they are filled with a wide range of tasks to engage and motivate the students whilst checking on their understanding. The following specification points are covered by the lessons in this bundle: 5.1.1: Communication and homeostasis The communication between cells by cell signalling The principle of homeostasis The physiological and behavioural responses involved in temperature control in endotherms and ectotherms 5.1.2: Excretion as an example of homeostatic control The functions of the mammalian liver The gross structure and histology of the kidney The processes of ultrafiltration and selective reabsorption The control of the water potential of the blood The effects of kidney failure and its potential treatments 5.1.3: Neuronal communication The roles of mammalian sensory receptors in converting stimuli into nerve impulses The structure and functions of sensory, relay and motor neurones The generation and transmission of nerve impulses in mammals The structures and roles of synapses in transmission 5.1.4: Hormonal communication Endocrine communication by hormones The structure and functions of the adrenal glands The structure of the pancreas The regulation of blood glucose concentration The difference between diabetes mellitus type I and II The potential treatments for diabetes mellitus It is estimated that it will take in excess of 2 months of allocated A-level teaching time to cover the detail included in these lessons If you would like to sample the quality of the lessons in this bundle, then download the following lessons as they have been shared for free: The principles of homeostasis Temperature control in ectotherms The functions of the liver The structure of the kidney The generation and transmission of nerve impulses Endocrine communication

The detailed content, exam-style questions, guided discussion points and quiz competitions that are found in each of the 16 paid lessons that are included in this bundle (as well as the 5 free lessons which are named at the bottom) cover the following specification points in module 4 of the OCR A-level Biology A specification: Module 4.1.1 The different types of pathogen that can cause communicable diseases in plants and animals The means of transmission of animal and plant communicable pathogens The primary non-specific defences against pathogens in animals The structure and mode of action of phagocytes The structure, different roles and modes of action of B and T lymphocytes in the specific immune response The primary and secondary immune responses The structure and general functions of antibodies An outline of the action of opsonins, agglutinins and anti-toxins The differences between active and passive immunity, and between natural and artificial immunity Autoimmune diseases The principles of vaccination Module 4.2.1 How biodiversity can be considered at different levels The random and non-random sampling strategies that are carried out to measure the biodiversity of a habitat How to measure species richness and species evenness The use and interpretation of Simpson’s Index of Diversity How genetic biodiversity may be assessed The ecological, economic and aesthetic reasons for maintaining biodiversity In situ and ex situ methods of maintaining biodiversity International and local conservation agreements made to protect species and habitats 4.2.2 The biological classification of species The binomial system of naming species and the advantage of such a system The features used to classify organisms into the five kingdoms The evidence that has led to new classification systems The different types of variation Using the standard deviation to measure the spread of a set of data Using the Student’s t-test to compare means of data values of two populations Using the Spearman’s rank correlation coefficient to consider the relationship of the data The different types of adaptations to their environment The mechanism by which natural selection can affect the characteristics of a population over time How evolution in some species has an impact on human populations If you would like to get an idea of the quality of the lessons that are included in this bundle, then download the following five OCR A lessons which have been uploaded for free: Immunity & vaccinations Reasons for maintaining biodiversity Taxonomic hierarchy and the binomial naming system Adaptations and natural selection Transmission of animal and plant pathogens

This bundle contains 17 fully-resourced and detailed lessons that have been designed to cover the content of topic 7 of the AQA A-level Biology specification which concerns genetics, populations, evolution and ecosystems. The wide range of activities included in each lesson will engage the students whilst the detailed content is covered and the understanding and previous knowledge checks allow them to assess their progress on the current topic as well as challenging them to make links to other related topics. Most of the tasks are differentiated to allow differing abilities to access the work and be challenged. The following sub-topics are covered in this bundle of lessons: The use of genetic terminology The inheritance of one or two genes in monohybrid and dihybrid crosses Codominant and multiple alleles The inheritance of sex-linked characteristics Autosomal linkage Epistasis as a gene interaction The use of the chi-squared test Species exist as one or more populations The concepts of gene pool and allele frequency Calculating allele frequencies using the Hardy-Weinberg principle Causes of phenotypic variation Stabilising, directional and disruptive selection Genetic drift Allopatric and sympatric speciation Species, populations, communities and ecosystems Factors affecting the populations in ecosystems Estimating the size of a population using randomly placed quadrats, transects and the mark-release-recapture method Primary succession, from colonisation by pioneer species to climax community Conservation of habitats frequently involves the management of succession This is one of the 8 topics which have to be covered over the length of the 2 year course and therefore it is expected that the teaching time for this bundle will be in excess of 2 months If you want to see the quality of the lessons before purchasing then the lessons on codominant and multiple alleles, epistasis and phenotypic variation are free resources to download

This bundle contains 17 fully-resourced and detailed lessons that have been designed to cover the content of topic 6 of the AQA A-level Biology specification which concerns the responses of organisms to stimuli. The wide range of activities included in each lesson will engage the students whilst the detailed content is covered and the understanding and prior knowledge checks allow them to assess their progress on the current topic as well as challenging them to make links to other related topics. Most of the tasks are differentiated to allow differing abilities to access the work and be challenged. The following sub-topics are covered in this bundle of lessons: The role of sensory receptors as outlined by the Pacinian corpuscle The human retina as a sensory receptor The differences in rods and cones that enable different sensitivity to light, colour and visual acuity The roles of the SAN, AVN, Bundle of His and Purkyne fibres in the conduction system of the heart The control of heart rate The structure of a myelinated motor neurone The factors that affect the speed of conduction of an impulse The generation and transmission of nerve impulses The transmission at a cholinergic synapse and a neuromuscular junction Summation The contraction of skeletal muscles The structure and properties of slow and fast skeletal muscle fibres The principles of homeostasis including negative feedback systems The control of blood glucose concentration by the controlled release of insulin and glucagon The causes and control of diabetes type I and II The gross structure of the kidney The detailed structure of the nephron The production of glomerular filtrate The reabsorption of glucose and water in the PCT The role of the hypothalamus, posterior pituitary and ADH in osmoregulation This is one of the 8 topics which have to be covered over the length of the 2 year course and therefore it is expected that the teaching time for this bundle will be in excess of 2 months If you want to see the quality of the lessons before purchasing then the lessons on saltatory conduction, the contraction of skeletal muscles and ultrafiltration are free resources to download

Every one of the lessons included in this bundle is detailed, engaging and fully-resourced, and has been written to cover the content as detailed in topic 4 of the AQA A-level Biology specification. The wide range of activities will maintain engagement whilst supporting the explanations of the content to allow the students to build a deep understanding of genetic information, variation and relationships between organisms. The following 17 lessons covering the 7 sub-topics are included in this bundle: 4.1: DNA, genes and chromosomes DNA in prokaryotes and eukaryotes Genes 4.2: DNA and protein synthesis Genome, proteome and the structure of RNA Transcription and splicing Translation 4.3: Genetic diversity can arise as a result of mutation or during meiosis The genetic code Gene mutations Chromosome mutations Meiosis 4.4: Genetic diversity and adaptation Genetic diversity Natural selection Directional and stabilising selection Adaptations 4.5: Species and taxonomy Species and taxonomy 4.6: Biodiversity within a community Biodiversity within a community Calculating an index of diversity The balance between conservation and farming 4.7: Investigating diversity Investigating diversity Interpreting mean values and the standard deviation If you would like to sample the quality of the lessons in this bundle, then download the DNA in prokaryotes and eukaryotes, structure of RNA, gene mutations, natural selection and standard deviation lessons as these have been uploaded for free

This bundle contains 19 PowerPoint lessons which are highly-detailed and are fully-resourced with differentiated worksheets. Intricate planning means that the wide range of activities included in these lessons will engage and motivate the students, check on their current understanding and their ability to make links to previously covered topics and most importantly will deepen their understanding of the following specification points in topic 2 (Cells) of the AQA A-level Biology specification: Structure and function of the organelles in eukaryotic cells The specialised cells in complex, multicellular organisms The structure of prokaryotic cells The structure of viruses which are acellular and non-living The principles and limitations of optical, transmission electron and scanning electron microscopes Measuring the size of an object under an optical microscope Use of the magnification formula The behaviour of chromosomes during the stages of the cell cycle Binary fission The basic structure of cell membranes The role of phospholipids, proteins, glycoproteins, glycolipids and cholesterol Simple diffusion Facilitated diffusion Osmosis, explained in terms of water potential The role of carrier proteins and the hydrolysis of ATP in active transport Co-transport as illustrated by the absorption of sodium ions and glucose by the cells lining the mammalian ileum Recognition of different cells by the immune system The identification of pathogens from antigens The phagocytosis of pathogens The cellular response involving T lymphocytes The humoral response involving the production of antibodies by plasma cells The structure of an antibody The roles of plasma cells and memory cells in the primary and secondary immune response The use of vaccines to protect populations The differences between active and passive immunity The structure of the human immunodeficiency virus and its replication in helper T cells How HIV causes the symptoms of AIDS Why antibiotics are ineffective against viruses The use of antibodies in the ELISA test If you would like to sample the quality of these lessons, then download the eukaryotic animal cells, viruses, microscopes, osmosis, lymphocytes, HIV and AIDS lessons as these have been shared for free.

This bundle of 20 fully-resourced lessons have been designed to allow students who are studying the AQA GCSE Combined Science course to assess their understanding of the topics found within the following units of the specification: B1: Cell Biology B2: Organisation B4: Bioenergetics B5: Homeostasis and response B6: Inheritance, variation and evolution B7: Ecology C1: Atomic structure and the periodic table C2: Bonding, structure and properties of matter C3: Quantitative chemistry C4: Chemical changes C5: Energy changes C6: The rate and extent of chemical change C7: Organic chemistry C8: Chemical analysis C9: Chemistry of the atmosphere P1: Energy P2: Electricity P4: Atomic structure P5: Forces P6: Waves These lessons use a range of exam questions, understanding checks, quick tasks and quiz competitions to engage and motivate the students

This bundle of 18 lessons uses a range of exam questions, tasks, activities and quiz competitions to engage students whilst they assess their knowledge of the topics in modules B1-6, C1-6 and P1-6 of the OCR Gateway A GCSE Combined Science specification. All of the lessons are fully resourced to take away that worry about how to get students to effectively revise in the lead up to assessments.

The wide variety of tasks that are written into the 18 lesson PowerPoints and accompanying resources that are included in this lesson bundle will engage and motivate the students whilst covering the detailed content of topic 4 of the Edexcel A-level Biology B specification (Exchange and transport). The following specification points are covered by these lessons: Understand how the surface area to volume ratio affects the transport of molecules in living organisms Understand why organisms need a mass transport system and specialised gas exchange surfaces as they increase in size The structure of the cell surface membrane Passive transport is brought about by diffusion and facilitated diffusion Passive transport is brought about by osmosis Understand how the properties of molecules affects how they are transported Large molecules are transported in and out of cells by endocytosis and exocytosis The process of active transport The phosphorylation and hydrolysis of ATP Understand how insects, fish and mammals are adapted for gas exchange The structure of the heart, arteries, veins and capillaries The advantages of the double circulatory system The sequence of events of the cardiac cycle The myogenic stimulation of the heart Interpreting ECG traces The role of platelets and plasma proteins in the sequence of events leading to blood clotting The structure of haemoglobin in relation to its role in the transport of respiratory gases The Bohr effect The dissociation curve of haemoglobin The significance of the oxygen affinity of foetal haemoglobin The similarities and differences between the structure and function of haemoglobin and myoglobin The formation and reabsorption of tissue fluid Know that tissue fluid that is not reabsorbed is returned to the blood via the lymph The structure of the xylem and phloem in relation to their role in transport The movement of water by the apoplastic and symplastic pathways The cohesion-tension model Hours and hours has gone into the intricate planning of all of these lessons and the quality can be sampled by downloading the following lessons which have been uploaded for free: Surface area to volume ratio ATP, active transport, endocytosis and exocytosis Structure of the heart, arteries, veins and capillaries Double circulatory system Apoplastic and symplastic pathways

This bundle contains 20 lesson PowerPoints which are highly detailed to ensure that the topic 7 content is covered at the depth required for A-level Biology. The lessons have been intricately planned to contain a wide variety of tasks that will engage and motivate the students whilst covering the current material and to make links to other lessons in this topic as well as to the previous 6 topics. The tasks, which include exam-style questions with mark schemes, guided discussion time and quick quiz competitions, cover the following points in the respiration, muscles and the internal environment topic of the Edexcel International A-level Biology specification: The overall reaction of aerobic respiration The many steps of respiration are controlled and catalysed by a specific intracellular enzyme The roles of glycolysis in aerobic and anaerobic respiration The role of the link reaction and the Krebs cycle in the complete oxidation of glucose The synthesis of ATP by oxidative phosphorylation Know the way in which muscles, tendons, the skeleton and ligaments interact in movement The structure of skeletal muscle fibre The structural and physiological differences between fast and slow twitch muscle fibres The contraction of skeletal muscle in terms of the sliding filament theory The myogenic nature of cardiac muscle The coordination of the heartbeat The use of ECGs in the diagnosis of abnormal heart rhythms The calculation of cardiac output The control of heart rate and ventilation rate by the cardiovascular control centre and the ventilation centre in the medulle oblongata The role of adrenaline in the fight or flight response The meaning of negative feedback and positive feedback control The principle of negative feedback in maintaining systems within narrow limits The meaning of homeostasis and the maintenance of a dynamic equilibrium in exercise The gross and microscopic structure of the mammalian kidney Selective reabsorption in the proximal tubule The control of mammalian plasma concentration Switching genes on and off by DNA transcription factors and the roles of peptide and steroid hormones Due to the detail included in this lesson bundle, it is estimated that it will take in excess of 2 months of allocated A-level teaching time to cover the content If you would like to sample the quality of the lessons in the bundle, then download the skeletal muscle, coordination of the heartbeat, role of adrenaline and control of mammalian plasma concentration lessons as these have been uploaded for free

Hours and hours of planning have gone into each and every lesson that’s included in this bundle to ensure that the students are engaged and motivated whilst the detailed content of topic 2 of the Edexcel International A-level Biology specification is covered. Membranes, proteins, DNA and gene expression represent some of the most important structures, molecules and processes involved in this subject and a deep understanding of their role in living organisms is important for a student’s success. The 20 lesson PowerPoints and accompanying resources contain a wide range of activities which cover the following topic 2 specification points: Know the properties of gas exchange surfaces in living organisms Understand how the rate of diffusion can be calculated using Fick’s Law of Diffusion Understand how the structure of the mammalian lung is adapted for rapid gas exchange The structure and properties of cell membranes The movement of free water molecules by osmosis The movement across membranes by passive and active transport The role of channel and carrier proteins in membrane transport The basic structure of an amino acid The formation of polypeptides and proteins The structure of proteins The mechanism of action and specificity of enzymes Enzymes are biological catalysts Intracellular and extracellular enzymes The basic structure of mononucleotides The structure of DNA and RNA The process of DNA replication The nature of the genetic code A gene as a sequence of bases on DNA that codes for a sequence of amino acids The process of transcription and translation Errors in DNA replication give rise to mutations Mutations give rise to disorders but many mutations have no observable effect The meaning of key genetic terms Understanding the pattern of monohybrid inheritance Sex linkage on the X chromosome Understand how the expression of a gene mutation in people with cystic fibrosis impairs the functioning of the gaseous exchange, digestive and reproductive systems The uses and implications of genetic screening and prenatal testing Due to the detail included in all of these lessons, it is estimated that it will take in excess of 2 months of allocated A-level teaching time to complete the teaching of the bundle If you would like to sample the quality of these lessons, then download the rapid gas exchange, osmosis, DNA & RNA, genetic code, genetic terms and cystic fibrosis lessons as these have been uploaded for free.

This bundle of 19 lessons covers the majority of the content in Topic B6 (Global challenges) of the OCR Gateway A GCSE Biology specification. The topics covered within these lessons include: Investigating distribution by sampling Increasing biodiversity Loss of biodiversity Selective breeding Genetic engineering Producing a GMO Health and disease Communicable diseases Stopping the spread of diseases Plant diseases Plant defences The Human Body’s Defences Blood clotting The uses of vaccines Monoclonal antibodies Antibiotics Developing drugs Non-communicable diseases Treating cardiovascular diseases Organ transplants Stem cells in medicine All of these lesson presentations and accompanying resources are detailed and engaging and contain regular progress checks to allow the students to constantly assess their understanding.

This bundle of 17 lessons covers the majority of the content in Topic B6 (Global challenges) of the OCR Gateway A GCSE Combined Science specification. The topics covered within these lessons include: Investigating distribution by sampling Increasing biodiversity Loss of biodiversity Selective breeding Genetic engineering Producing a GMO Health and disease Communicable diseases Stopping the spread of diseases Plant diseases The Human Body Defences Blood clotting Using vaccines In the prevention of disease Antibiotics Developing drugs Non-communicable diseases Treating cardiovascular diseases Organ transplants Stem cells in medicine All of these lesson presentations and accompanying resources are detailed and engaging and contain regular progress checks to allow the students to constantly assess their understanding.