This is a fully-resourced revision resource which has been designed to encourage students to evaluate their understanding of the content in TOPIC 4 of the AQA A-level Biology specification (Genetic information, variation and relationships between organisms) . The resource includes an engaging PowerPoint (96 slides) and associated worksheets, some of which have been differentiated to allow those struggling with the content to access the work. The wide range of activities which includes exam questions, quick tasks and quiz competitions will motivate the students whilst they assess their knowledge and recognise those areas which require even further attention. The lesson has been designed to cover as many sub-topics as possible but the following have been given particular attention: Classification hierarchy DNA in prokaryotes and eukaryotes The binomial naming system Phylogeny Modern day classification using biological molecules Calculating biodiversity Selection pressures and types of selections Transcription Gene mutations Physiological, behavioural and anatomical adaptations Meiosis and variation Non-disjunction The mathematical element of this topic and the course is challenged throughout the lesson and helpful hints are regularly provided to help students to structure their answers. This resource can be used as a revision aid at the end of the topic, in the lead up to AS or A2 mocks or in the lead up to the actual terminal A-level exams.

This engaging and detailed REVISION resource has been written to encourage students to evaluate their understanding of the content found in MODULE 4.1.1 (Communicable diseases, disease prevention and the immune system) of the OCR A-Level Biology specification. The resource contains a motivating PowerPoint (86 slides) and associated worksheets which have been differentiated to support students of differing abilities in their access of the work. The lesson includes a wide range of activities such as exam questions, quick tasks and quiz competitions to motivate the students whilst they recognise those areas of the specification which require even more attention. The lesson has been designed to cover as much of the content in module 4.1.1 as possible but the following sub-topics have been given particular attention: Communicable diseases caused by bacteria, viruses and fungi Bacteria as pathogens Antigen-presenting cells The specific immune response Antibiotics and the existence of resistant strains Preventing the spread of pathogens Vaccinations Primary defences of the human body In addition to content from this module, links are made to earlier modules and challenges posed so that students can see how connections between the modules have to be made to be successful. This resource is suitable for use at the end of the module, in the lead up to AS or A2 mocks or in the lead up to the actual A-level exams.

This revision resource has been written to include a range of activities that motivate the students whilst they assess their understanding of the content found in module 2.1.5 (Biological membranes) of the OCR A-level Biology A specification. The resource includes a detailed and engaging Powerpoint (71 slides) and associated worksheets The range of activities have been designed to cover as much of the content as possible but the following sub-topics have been given particular attention: The movement of molecules by active transport which requires ATP as an immediate source of energy The movement of molecules by passive processes The use of membrane-spanning proteins in facilitated diffusion and active transport Factors that increase the rate of simple diffusion The movement of water across membranes by osmosis The effects that solutions of different water potentials can have on animal and plant cells The fluid mosaic model of membrane structure The roles of the components of the plasma cell membrane In addition to these topics, some topics from other modules such as organelles, synapses and autoimmune diseases are tested in order to challenge the students on their ability to make links between the modules. The range of activities include exam questions and understanding checks as well as quiz competitions to maintain student engagement.

The range of exam questions, understanding checks and quiz competitions that have been written into this revision lesson will help to motivate and engage the students whilst they assess their understanding of the content found in topic 1.3 (Digestion and the digestive system in humans) of the WJEC GCSE Biology specification. The resource includes a detailed and engaging Powerpoint (51 slides) and an associated worksheet, which has been differentiated to help differing abilities to access the work. The range of activities have been designed to cover as much of the content as possible but the following sub-topics have been given particular attention: The movement of food by peristalsis The role of carbohydrase, protease and lipase enzymes in digestion The tests for the presence of starch and glucose The roles of the stomach and small intestine in digestion The function of bile in the break down of fats The need for a balanced diet and implication for health of excess sugar and salt in foods

This revision resource includes exam questions, understanding checks and quiz competitions, all of which have been designed with the aim of motivating and engaging the students whilst they assess their understanding of the content found in topic 5 (Enzymes) of the CIE IGCSE Biology specification for examination in June and November 2020 and 2021. This revision resource contains an engaging PowerPoint (25 slides) and associated worksheet. The range of activities have been designed to cover as much of the Core and supplement content as possible but the following sub-topics have been given particular attention: Define enzymes as proteins that function as biological catalysts Explain enzyme action with reference to active site, substrate and enzyme-substrate complex Explain the specificity of enzymes Explain the effect of changes of temperature on enzyme activity Explain the effect of changes of pH on enzyme activity Describe what happens to an enzyme when it is denatured

This revision resource includes exam questions, understanding checks and quiz competitions, all of which have been designed with the aim of motivating and engaging the students whilst they assess their understanding of the content found in topic 10 (Diseases and immunity) of the CIE IGCSE Biology specification for examination in June and November 2020 and 2021. This revision resource contains an engaging PowerPoint (37 slides) and associated worksheets, some of which have been differentiated to help and challenge differing abilities. The range of activities have been designed to cover as much of the Core and Supplement content as possible but the following sub-topics have been given particular attention: Pathogens as disease causing microorganisms that cause transmissible diseases when they are spread Pathogens can be spread through direct or indirect contact Vaccinations as a form of active immunity that leads to the production of memory cells Examples of passive immunity The human body’s defence systems to include the white blood cells Diabetes type I as an example of an autoimmune disease

This revision resource includes exam questions, understanding checks and quiz competitions, all of which have been designed with the aim of motivating and engaging the students whilst they assess their understanding of the content found in topic 2 (Organisation of the organism) of the CIE IGCSE Biology specification for examination in June and November 2020 and 2021. This revision resource contains an engaging PowerPoint (53 slides) and an associated worksheet. The range of activities have been designed to cover as much of the Core and Supplement content as possible but the following sub-topics have been given particular attention: The function of the organelles found in animal and plant cells The features of specialised cells which allow them to perform their function The mitochondria and the production of energy for use in cell activities Calculating size and magnification by converting between millimetres and micrometres Tissues, organs and organ systems

This revision resource includes exam questions, understanding checks and quiz competitions, all of which have been written to motivate and engage the students whilst they assess their understanding of the content found in topic 4 (Biological molecules) of the CIE IGCSE Biology specification for examination in June and November 2020 and 2021. This revision resource contains an engaging PowerPoint (36 slides) and associated worksheets. The range of activities have been designed to cover as much of the Core and Supplement content as possible but the following sub-topics have been given particular attention: List the chemical elements that make up carbohydrates State how starch, glycogen, cellulose, proteins and fats and oils are made from their specific smaller molecules Describe the use of the iodine and Benedicts solution test Explain how the specific sequence of the amino acids in a protein controls the shape and the effect this has on an enzyme and antibodies Describe the structure of DNA Recognise that water is an important solvent which is involved in a large number of roles in the human body In addition, links have been made to other topics such as hormones and organelles so that students can see the importance of making links between Biological topics

This revision resource has been designed to cover the content in both topic 11 (Gas exchange) and topic 12 (Respiration) of the CIE IGCSE Biology specification for examination in June and November 2020 and 2021. The topics have been combined because of the huge crossover and the aim was to encourage students to see those connections and to make the Biological links. The resource contains an engaging and detailed PowerPoint (77 slides) and associated worksheets, some of which have been differentiated to provide assistance for those students who need it. Included in the resource are exam questions, quick tasks and quiz competitions which try to cover as much content as possible with the following areas receiving particular attention: The internal and external structure of the trachea The structure of the alveoli to allow efficient gas exchange The role of the ribs, intercostal muscles and diaphragm in ventilation The differences in composition between inspired and expired air Aerobic respiration in seeds The uses of energy in the body of humans Anaerobic respiration and the oxygen debt This resource contains a large emphasis on the mathematical element of the Biology course. Students are guided through key skills such as percentage change and then challenged to apply

This revision resource contains an engaging and informative PowerPoint (49 slides) and a differentiated worksheet that will enable the students to assess their understanding of the topic B2 (Cells) content of the CIE IGCSE Combined Science specification for examination in June and November 2020 and 2021. The following topics have been given particular attention in this lesson: The structure and function of red blood cells Diffusion as the movement of molecules from a high concentration to a low concentration The structure of root hair cells to allow absorption of minerals and water from the soil Osmosis investigations The effect on plant cells of immersion in solutions of different water potentials The function of the organelles found in animal and plant cells The structure and function of specialised cells This resource is ideal for revision purposes during or at the end of the topic and in the lead up to mocks or the actual IGCSE exams

This concise, engaging revision lesson has been designed to include activities that will motivate the students whilst they assess their understanding of topic B3 (Biological molecules) of the CIE IGCSE Combined Science specification. An understanding of biological molecules is fundamental to the understanding of a lot other Biology topics and this lesson has attempted to make the links between the different areas. The range of activities which include exam questions, quick tasks and quiz competitions have been written to cover as much of the content as possible but the following topics have received particular attention: The chemical elements in carbohydrates The formation of starch and glycogen from glucose The iodine test for starch Lipids are formed of fatty acids and glycerol Investigational skills The ethanol emulsion test for lipids This resource includes a PowerPoint (27 slides) and a worksheet with a task about the digestion of milk fat so students can recognise the components of lipids

This lesson describes how mutations to the genes that control mitosis can lead to uncontrolled cell division and the formation of cancerous tumours. The PowerPoint and accompanying resources are part of the final lesson in a series of 3 lessons which have been planned to cover the content of topic 2.2 (All cells arise from other cells) of the AQA A-level biology specification. The first 2 lessons in this series of lessons described the events of the mitotic cell cycle and the calculation of the mitotic index and interpretation of the calculated value, and this lesson has been designed to check on their understanding and to build on the existing knowledge. The lesson begins with a task using numbers from biology to reveal the term, controlled, which leads into the recognition that mitosis is a controlled process that’s controlled by genes. Moving forwards, the students will understand that mutations to these genes and the formation of alleles can cause the cell division to become uncontrolled and this leads to the formation of tumours. Students will learn that there are benign and malignant tumours and that the latter are cancerous. The topic of tumours is covered in more detail in topic 8, but the key details are introduced here. The example of the BRCA genes is used to describe treatments that aim to control the rate of cell division and the importance of diagnosing cancer early to try to prevent the spread to other tissues.

This lesson uses a step-by-step guide to describe the role of gibberellins in the germination of barley. The PowerPoint and accompanying resource have been planned to cover point (3) of topic 15.2 of the CIE A-level biology specification (for assessment in 2025 - 27). The lesson begins with a challenge, where the students must identify the term, germination, from a series of clues. They will learn that this is the development of a plant from a seed following a period of dormancy and involves gibberellins. A quick quiz round is then used to introduce the embryo, endosperm and aleurone layer in the structure of a barley seed. The process of seed germination can be divided into a sequence of 9 events and the main task of the lesson challenges the students to order these 9 events. However, this task has an extra level of difficulty as two of the events have been missed out, so the students must use the clues to predict the key biological processes in these events.

This detailed and engaging lesson supports students with their revision in the build up to their UNIT 1 mocks or final assessment. The wide range of tasks and activities will challenge them on their knowledge of Molecules, Diet, Transport and Health (topics 1 and 2) of the Edexcel International A-level biology specification, allowing them to identify any areas which require further attention before the examinations. Included in the range of tasks are exam-style questions and understanding checks and all answers are embedded into the PowerPoint. There are quiz rounds to maintain engagement and to encourage healthy competition, as well as guided discussion periods to provide opportunities for students to support each other. The following content is directly covered by this revision lesson: The nature of the genetic code Globular and fibrous proteins Protein structure Haemoglobin and the affinity for oxygen The role of the heart valves in the cardiac cycle The course of events that lead to atherosclerosis Passive and active transport DNA replication The structure and function of starch Genetic terminology Codominance Sex-linked diseases Many of the tasks have been differentiated to maintain challenge whilst providing access to all. This is an extensive lesson with many tasks so it is estimated that it will take over 3 hours of teaching time if covered in full, but teachers may choose to use sections to focus on a specific topic.