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GCSE

Biology Chemistry Combined Science Maths Physics

A-Level

Biology Chemistry Maths Physics

2339 questions

AQA Edexcel A Edexcel B OCR

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Biological molecules 371

Monomers and polymers FREE 13
Carbohydrates FREE 59
Lipids FREE 39
Proteins 127
Nucleic acids are important information-carrying molecules 57
ATP 16
Water 47
Inorganic ions 13

Cell structure 167
All cells arise from other cells 33
Transport across cell membranes 68
Cell recognition and the immune system 99

Organisms exchange substances with their environment 275

Surface area to volume ratio 21
Gas exchange 66
Digestion and absorption 48
Mass transport 140

Genetic information, variation and relationships between organisms 167

DNA, genes and chromosomes 20
DNA and protein synthesis 28
Genetic diversity can arise as a result of mutation or during meiosis 35
Genetic diversity and adaptation 31
Species and taxonomy 23
Biodiversity within a community 21
Investigating diversity 9

Energy transfers in and between organisms 205

Photosynthesis 74
Respiration 77
Energy and ecosystems 43
Nutrient cycles 11

Organisms respond to changes in their internal and external environments 448

Stimuli, both internal and external, are detected and lead to a response 139
Nervous coordination 98
Skeletal muscles are stimulated to contract by nerves and act as effectors 19
Homeostasis is the maintenance of a stable internal environment 175

Genetics, populations, evolution and ecosystems 92

Populations 20
Evolution may lead to speciation 7
Populations in ecosystems 38

The control of gene expression 414

Alteration of the sequence of bases in DNA can alter the structure of proteins 18
Gene expression is controlled by a number of features 85
Using genome projects 32
Gene technologies allow the study and alteration of gene function allowing a better understanding of organism function and the design of new industrial and medical processes 141

A-Level Biology (AQA)

2339 questions

367 questions available

Cells

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