Skip to content

Explore

Home
Features
Subjects
Past papers
Blog
Changelog

Report an issue

Sign in Create account

Features Subjects Past papers Blog Changelog

Sign in Create account

Topics

Measurement194

Physical quantities and measurement techniques194

Mechanics1563

Density204 Forces369 Mass and weight222 Momentum145 Motion340 Pressure283

Energy754

Energy, work and power440 Transfer of thermal energy314

Thermal Physics501

Thermal properties and temperature501

Waves1042

General properties of waves322 Light447 Sound273

Electricity and Magnetism1456

Electric circuits556 Electrical quantities455 Electrical safety155 Simple phenomena of magnetism290

Atomic and Space Physics852

Radioactivity456 Stars and the Universe75 The Earth and the Solar System57 The nuclear model of the atom264

Other Topics917

Electromagnetic effects458 Electromagnetic spectrum174 Kinetic particle model of matter285

Particles and Structure1085

Atoms, elements and compounds838 States of matter247

Chemical Reactions260

Chemical energetics260

Acids and Electrochemistry984

Acids, bases and salts640 Electrochemistry344

Periodic Chemistry1656

Metals955 The Periodic Table701

Organic Chemistry1157

Organic chemistry1157

Analysis and Environment1117

Chemistry of the environment623 Experimental techniques and chemical analysis494

Other Topics1181

Chemical reactions823 Stoichiometry358

Cells and Molecules840

Biological molecules193 Enzymes278 Movement into and out of cells369

Nutrition and Transport1567

Human nutrition532 Plant nutrition326 Transport in animals338 Transport in plants371

Respiration and Homeostasis491

Excretion in humans202 Respiration289

Coordination and Response542

Coordination and response542

Reproduction and Inheritance1305

Inheritance492 Reproduction569 Variation and selection244

Ecology and Human Impact329

Human influences on ecosystems329

Disease and Biotechnology479

Biotechnology and genetic modification201 Diseases and immunity190 Drugs88

Classification581

Characteristics and classification of living organisms581

Other Topics1386

Gas exchange in humans231 Organisation of the organism495 Organisms and their environment660

The Vault/Practice

Biology / Characteristics and classification of living organisms

Practice

Question 1 of 2 · up to 2 questions

Question 1

1 / 2

Question

Choose your answer

Terms Privacy Disclaimer