Revision notes for the Cellular Control Topic 6.1.1 for A-Level OCR A Biology. These notes contain all the specification knowledge and examples required for this topic. They allow a strong understanding of content to achieve a high grade. The word document contains 8 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • Gene mutations • Control of gene expression: transcriptional control • Control of gene expression: post-transcriptional control • Control of gene expression: post-translational control • Genetic control of the body plan Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Revision notes for the Plant Responses Topic 5.1.5 for A-Level OCR A Biology. These notes contain all the specification knowledge required, examples and required practicals for this topic. They allow a strong understanding of content to achieve a high grade. The word document contains 7 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • Plant responses to the environment • Controlling plant growth • Tropisms • Experimental evidence for plant hormones • Investigating plant hormones and tropisms • Roles of plant hormones • Commercial use of plant hormones • Required Practical 11: Investigation into the Measurement of Plant or Animal Responses Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Revision notes for the Populations and Sustainability Topic 6.3.2 for A-Level OCR A Biology. These notes contain all the specification knowledge and examples required for this topic. They allow a strong understanding of content to achieve a high grade. The word document contains 9 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • Population size • Interactions between populations • Conservation and preservation • Sustainable management of ecosystems • Balance the conflict between conservation and human needs – including: Maasai Mara in Kenya, Terai region in Nepal and peat bogs in the UK. • Controlling the effects of human activities – including: the Galapagos Islands, Antarctica, Snowdonia National Park and the Lake District Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Revision notes for the Cloning and Biotechnology Topic 6.2.1 for A-Level OCR A Biology. These notes contain all the specification knowledge required, examples and required practicals for this topic. They allow a strong understanding of content to achieve a high grade. The word document contains 11 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • Plant cloning • Animal cloning • Food production • Drug production • Immobilised enzymes • Required practical 7: Microbial techniques • Practical: Factors affecting microorganisms growth Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Revision notes for the Ecosystems Topic 6.3.1 for A-Level OCR A Biology. These notes contain all the specification knowledge required, examples and practical skills for this topic. They allow a strong understanding of content to achieve a high grade. The word document contains 9 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • Ecosystems • Transfer of biomass and biomass calculations • Manipulating the transfer of biomass • The nitrogen cycle • The carbon cycle • Succession • Studying ecosystems Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Revision notes for the Communication and Homeostasis Topic 5.1.1 for A-Level OCR A Biology. These notes contain all the specification knowledge and examples required for this topic. They allow a strong understanding of content to achieve a high grade. The word document contains 4 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • The need for communication systems • The principles of homeostasis • Control of body temperature – including: endotherms (e.g. mammals) and ectotherms. Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Revision notes for the Animal Responses Topic 5.1.5 for A-Level OCR A Biology. These notes contain all the specification knowledge and examples required for this topic. They allow a strong understanding of content to achieve a high grade. The word document contains 10 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • The mammalian nervous system • The brain • Reflex actions • Coordinating responses • Controlling heart rate • Muscle structure • The action of neuromuscular junctions • The sliding filament hypothesis Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Revision notes for the Excretion as an Example of Homeostatic Control Topic 5.1.2 for A-Level OCR A Biology. These notes contain all the specification knowledge and examples required for this topic. They allow a strong understanding of content to achieve a high grade. The word document contains 9 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • Excretion • Structure and function of the liver – including: glycogen storage, detoxification and the formation of urea. • Structure and function of the kidney – including ultrafiltration and selective reabsorption. • Osmoregulation • Kidney failure • Urine analysis – including pregnancy tests. Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Revision notes for the Hormonal Communication Topic 5.1.4 for A-Level OCR A Biology. These notes contain all the specification knowledge and examples required for this topic. They allow a strong understanding of content to achieve a high grade. The word document contains 5 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • Endocrine communication • Adrenal glands • The pancreas • The control of blood glucose concentration • Diabetes Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Revision notes for the Cell Structure Topic 2.1.1 for AS-Level and Year 1 A-Level OCR A Biology. These notes contain all the specification knowledge required, examples and required practicals for this topic. They allow a strong understanding of content to achieve a high grade. The word documents contain a total of 6 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • Microscopy • Cell Structure – including: organelles, production and secretion of proteins, the cytoskeleton. • Animal and Plant cells • Prokaryotic and Eukaryotic cells • Required Practical 1: Microscopy Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Revision notes for the Cell Division, Cell Diversity and Cellular Organisation Topic 2.1.6 for AS-Level and Year 1 A-Level OCR A Biology. These notes contain all the specification knowledge and examples required for this topic. They allow a strong understanding of content to achieve a high grade. The word document contains 8 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • The cell cycle • Mitosis • Meiosis • Stem cells and differentiation – including: specialised cells • Tissues, organs and systems Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Revision notes for the Biological Membranes Topic 2.1.5 for AS-Level and Year 1 A-Level OCR A Biology. These notes contain all the specification knowledge required, examples and required practicals for this topic. They allow a strong understanding of content to achieve a high grade. The word documents contain a total of 8 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • Roles of membranes • Fluid mosaic model and membrane structure • Factors affecting membranes – temperatures and solvents • Transport across cell membranes – diffusion, facilitated diffusion, osmosis, active transport, exocytosis, endocytosis • Required Practical 8: Transport in and out of cells Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Revision notes for the Biodiversity Topic 4.2.1 for AS-Level and Year 1 A-Level OCR A Biology. These notes contain all the specification knowledge required, examples and required practicals for this topic. They allow a strong understanding of content to achieve a high grade. The word document contains 7 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • Biodiversity • Calculating biodiversity – including Simpson’s Index of Diversity, proportion of polymorphic loci, population size. • Factors affecting biodiversity • Reasons for maintaining biodiversity • In-situ and ex-situ conservation • Required Practical 3: Sampling techniques Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Revision notes for the Enzymes Topic 2.1.4 for AS-Level and Year 1 A-Level OCR A Biology. These notes contain all the specification knowledge required, examples and required practicals for this topic. They allow a strong understanding of content to achieve a high grade. The word documents contain a total of 6 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • Action of enzymes • Factors affecting enzymes • Inhibition • Required Practical 4: Rates of enzyme controlled reactions Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Revision notes for the Nucleotides and Nucleic Acids Topic 2.1.3 for AS-Level and Year 1 A-Level OCR A Biology. These notes contain all the specification knowledge required, examples and practical methods for this topic. They allow a strong understanding of content to achieve a high grade. The word document contains 4 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • Nucleotides • Polynucleotides • DNA – replication, genetic code • Protein synthesis – transcription, translation • Purification of DNA Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Revision notes for the Exchange Surfaces Topic 3.1.1 for AS-Level and Year 1 A-Level OCR A Biology. These notes contain all the specification knowledge required, examples and practical skills for this topic. They allow a strong understanding of content to achieve a high grade. The word document contains 5 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • The need for exchange surfaces • Gaseous exchange system in mammals • Ventilation in mammals – including using a spirometer • Gaseous exchange and ventilation in fish • Gaseous exchange and ventilation in insects Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Revision notes for the Transport in Plants Topic 3.1.3 for AS-Level and Year 1 A-Level OCR A Biology. These notes contain all the specification knowledge required, examples and required practicals for this topic. They allow a strong understanding of content to achieve a high grade. The word documents contain a total of 10 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • The need for transport systems in plants • The vascular bundle • Xylem • Phloem • Movement of water • The transpiration stream and factors affecting transpiration • Adaptations of xerophytic plants and hydrophytes • Translocation and active loading • Required Practical 5: Potometer Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Revision notes for the Transport in Animals Topic 3.1.2 for AS-Level and Year 1 A-Level OCR A Biology. These notes contain all the specification knowledge required and examples for this topic. They allow a strong understanding of content to achieve a high grade. The word document contains 10 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • Circulatory systems • Blood vessels • Exchange of the capillaries • The heart – including structure, the cardiac cycle and coordination of the cardiac cycle, electrocardiograms. • Transport of oxygen • Transport of carbon dioxide Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Revision notes for the Communicable Diseases, Disease Prevention and the Immune System Topic 4.1.1 for AS-Level and Year 1 A-Level OCR A Biology. These notes contain all the specification knowledge and examples required for this topic. They allow a strong understanding of content to achieve a high grade. The word document contains 8 pages of revision notes. These are the notes I created and used to obtain an A* at A Level. These notes include: • Pathogens and communicable diseases • Plant defences against pathogens • Primary defence • Secondary defence • The specific immune response • Antibodies and vaccination • Development and usage of drugs Uses: • Revision notes • Hand out notes for pupils • Content can be extracted by teachers to add to their lessons • Self-teaching for home education Search: missdarcey

Exam questions with marked exemplar answers for Weimar and Nazi Germany Edexcel GCSE history. These exam question responses cover all the types of questions that could be asked in paper 3: modern depth study. These responses will show you examples of how to structure your answers, as well as the amount of own knowledge, statistics and detail needed to get high marks. They are my own written answers and I achieved a level 9 at GCSE for history. Search: missdarcey