What Is Biology?
Explore branches of biology and the levels of living organisation.
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Biology Is the Study of Life
Biology is the science of living things — their structure, function, growth and interactions.
Branches
- Botany — plants
- Zoology — animals
- Microbiology — tiny organisms
- Physiology — how bodies work
- Ecology — organisms and their environment
Levels of Organisation
Life builds up in steps: atoms → molecules → cells → tissues → organs → organ systems → organisms.
Characteristics of living things: nutrition, respiration, movement, growth, excretion, sensitivity, reproduction.
Practice
For any living thing you choose (e.g., a plant or a bird), write one example of each characteristic of life shown above.
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Course contents
Introduction to Biology
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