OCR Biology A for A level/AS level - Exam Questions by topic (minus Biodiversity) for modules 2,3 and 4 with mark scheme. Easy to access after revising a topic to test your knowledge and understanding on. topics include: Cell structure Biological molecules Nucleotides and Nucleic acids Enzymes Biological membranes Cell division - Mitosis and meiosis Stem cells Specialized Cells Exchange in surfaces Transport in animals Transport in Plants Communicable Diseases Classificati...

Summary of what you need to know for a level biology ocr a crossing membranes including topics such as diffusion (facilitated, endo and exocytosis and simple) and osmosis.

I created these mind maps in year 12 () while studying for Biology A-level. They helped me get A* in Biology, they are very detailed and cover everything mentioned in the specification.

A-level OCR A Biology Book 2 notes on the structure and function of the liver with thorough diagrams and labelled annotations. Includes the structure of liver lobules as well.

A brief summary of the kidney as described in the second edition of the OCR A-Level Biology textbook serves as a concise introduction to your revision before a more in-depth revision by summarising the information you need to know about the kidneys.

Revision notes for Biology Transport in Animals OCR Biology A As/A Level

A revision summary of OCR A level Biology Excretion using kidney as example 5.1.2 Made by a student who achieved A* in A level Biology. Covers all the points within the OCR Biology Specification. Condenses 3 OCR specification books and class notes.

OCR Biology A (A-level) 5.1 Communication and homeostasis including: homeostasis (examples of positive and negative feedback), thermoregulation ectotherms/endotherms and adaptations, cell signalling (neuronal and hormonal signalling). Excretion as homeostatic control: kidney failure via haemodialysis and peritoneal dialysis, liver structure and adaptations of sinusoids, ultrafiltration and selective reabsorption pathways. Deamination pathway - ornithine cycle, loop of henle.

OCR Biology A (A-level) 5.1.5 Plant and animal responses covering summaries of plant responses such as: Apical dominance pathway and effects, Plant growth responses -> plant growth regulator hormones, Different types of tropisms and Leaf abscission. Animal responses covering: Mammalian muscle and contraction pathway, human brain anatomy and roles, nervous and endocrine systems in coordination, types of heart rate, sources of ATP and Muscle composition. Including also action potential within s...

OCR Biology A (A-level) Covering topics such as: Anaerobic respiration and the use of respirometer, Oxidative phosphorylation pathway, Respiration within link reaction, Krebs cycle and glycolysis pathways, Factors affecting photosynthesis (limiting factors), photosynthesis pathways -> light dependant and light independent reaction included.