* Doc Brown's Biology Revision Study Notes *

Suitable for GCSE/IGCSE/O level Biology/Science courses or equivalent

I am gradually writing GCSE biology notes for AQA GCSE biology, Edexcel GCSE biology, OCR (gateway science biology and 21st Century Science biology) exam board specifications.

Links to my new GCSE biology pages will be added to this biology index page AND to the GCSE science/biology pages summarising what you need to know for any GCSE science/biology paper specification (link below).

see also at end of page

General CELL BIOLOGY revision notes index

Introduction to plant and animal cell structure and function gcse biology revision notes

Stem cells and uses, and an introduction to cell differentiation and specialisation gcse biology revision notes

Microscopy - the development and use of microscopes in biology  gcse biology revision notes

Diffusion, osmosis and active transport  gcse biology revision notes

Examples of surfaces for the exchange of substances in animal organisms   gcse biology revision notes

RESPIRATION - aerobic and anaerobic in plants, fungi and animals, conditions, substrates etc.  gcse biology

ENZYMES - structure, function, optimum conditions, investigation experiments  gcse biology revision notes

See also Enzymes and Biotechnology (gcse chemistry notes)

CELL DIVISION - cell cycle - mitosis, meiosis and sexual reproduction, binary fission  gcse biology revision notes

Culturing microorganisms like bacteria - testing antibiotics  gcse biology revision notes

Genetics - from DNA to GM and lots in between!

DNA and RNA structure and Protein Synthesis  gcse biology revision notes

Introduction to the GENOME, gene expression - considering chromosomes, alleles, genotype, phenotype, variations

An introduction to genetic variation and the formation and consequence of mutations  gcse biology revision notes

Introduction to the inheritance of characteristics and genetic diagrams (including Punnett squares)  gcse biology revision notes including technical terms, Mendel's work and inherited disorders.

file genome4.htm will include Genetic engineering  gcse biology revision notes plus DNA matching R.F helix

human genome research medical genetic testing for potential disorder diseases improve healthcare

General HUMAN BIOLOGY revision notes

See also cell biology section

Homeostasis - introduction to how it functions (negative feedback systems explained)  gcse biology revision notes

Homeostasis - control of blood sugar level - insulin and diabetes  gcse biology revision notes

Homeostasis - osmoregulation, ADH, water control, urea and ion concentrations and kidney function, dialysis  gcse biology revision notes

Homeostasis - thermoregulation, control of temperature  gcse biology revision notes

The BRAIN - what the different parts do and the dangers if damaged gcse biology revision notes

An introduction to the nervous system including the reflex arc  gcse biology revision notes

Hormone Systems - menstrual cycle  gcse biology revision notes

Respiration - aerobic and anaerobic in plants and animals.  gcse biology revision notes

Keeping Healthy - Diet and Exercise  gcse biology revision notes

Keeping Healthy - How do our bodies defend themselves against infectious diseases?  gcse biology revision notes

See also Enzymes - section on digestion and synthesis  gcse biology revision notes

Examples of surfaces for the exchange of substances in animal organisms   gcse biology revision notes

Optics - lens types (convex, concave, uses), experiments, ray diagrams, correction of eye defects (gcse physics)

 General PLANT BIOLOGY revision notes

See also cell biology section

Photosynthesis, importance explained, limiting factors affecting rate, leaf adaptations  gcse biology revision notes

Transport and gas exchange in plants, transpiration, absorption of nutrients, leaf and root structure gcse biology

See also Diffusion, osmosis, active transport, exchange of substances - examples fully explained

Respiration - aerobic and anaerobic in plants  gcse biology revision notes

Hormone control of plant growth and uses of plant hormones  gcse biology revision notes

Plant diseases and defences against pathogens and pests  gcse biology revision notes

See also Adaptations, lots explained including plant examples  gcse biology revision notes

and a section on Stem cells and uses - meristems in plants (at the end of the page!)

Adaptations, Environment, Ecology, Cycles, Communities, Evolution and Speciation

Adaptations, lots of examples explained including extremophiles  gcse biology revision notes

Carbon cycle, nitrogen cycle, water cycle and decomposition  gcse biology revision notes

Ecosystems - biotic & abiotic factors - interactions between organisms - interdependency  gcse biology notes

Food chains, food webs, trophic levels and biomass   gcse biology revision notes

LINKS for my revision pages for the NEW GCSE 9-1 science-biology courses, next exams May-June 2019

Revision Summaries for the new GCSE BIOLOGY courses that started with Y10 in Sept. 2016

AQA GCSE Biology 8461  1st Paper (Topics 1-4 & Combined Science Trilogy Biology 1 Topics 1-4)

AQA GCSE Biology 8461  2nd Paper (Topics 5-7 & Combined Science Trilogy Biology 2 Topics 5-7)

Edexcel GCSE (9-1) Biology 1st Paper (Topics 1-5 & Combined Science Biology 1 Topics 1-5)

Edexcel GCSE (9-1) Biology 2nd Paper (Topics 1, 6-9 & Combined Science Biology 2 Topics 1, 6-9)

OCR (9-1) Gateway Science GCSE Biology A 1st Paper (Topics B1-3 & Combined Science A Biology 1 Topics B1-3)

OCR (9-1) Gateway Science GCSE Biology A 2nd Paper (Topics B4-6 & Combined Science A Biology 1 Topics B4-6)

OCR (9-1) 21st Century Science GCSE Biology B Chapters B1-3 (Chapters B1-3, GCSE Combined Science B biology)

OCR (9-1) 21st Century Science GCSE Biology B Chapters B4-6 (Chapters B4-6, GCSE Combined Science B biology)

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