Biology Form 1

Contenido

1. 1. Introduction to Biology

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   Teoría

   • What is biology? Branches and importance
   • Characteristics of living things
   • The biology laboratory and its apparatus
   • The scientific method
   • Summary

   What is biology? Biology is the scientific study of living things (organisms) and how they interact with each other and with their surroundings. The word comes from two Greek words: bios (life) and logos (study or knowledge). A person who studies biology is called a biologist . Main branches of biology Botany – the…

2. 2. Safety in Our Environment

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   Teoría

   • Safety, hazards and accidents
   • Laboratory rules and hazard symbols
   • First aid: meaning, aims and the first aid kit
   • First aid for common injuries
   • Summary

   Meaning of safety Safety is the condition of being protected from danger, injury or harm. A hazard is anything that can cause harm, for example fire, sharp objects, electricity, poisonous chemicals or slippery floors. An accident is an unplanned event that causes injury or damage. Most accidents can be prevented if we…

3. 3. Cell Structure and Organisation

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   Teoría

   • The cell and the light microscope
   • Magnification and the size of cells
   • Parts of a cell: plant and animal cells
   • Specialised cells
   • Levels of organisation
   • Summary

   The cell A cell is the basic structural and functional unit of life. Some organisms, such as Amoeba and bacteria, are made of only one cell ( unicellular ); others, such as a mango tree or a human, are made of millions of cells ( multicellular ). Cells are very small, so we use a light microscope to see them. The light…

4. 4. Classification of Living Things

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   Teoría

   • Meaning, importance and types of classification
   • The taxonomic hierarchy and the species
   • Binomial nomenclature
   • The five kingdoms and viruses
   • Dichotomous keys
   • Summary

   Meaning of classification Classification is the grouping of living things according to their similarities and differences. The branch of biology that deals with naming and classifying organisms is called taxonomy . There are millions of kinds of organisms on Earth, so placing them into groups makes them easier to…

5. 5. Health and Immunity

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   Teoría

   • Health, disease and types of disease
   • How diseases spread and how to prevent them
   • The body's defences against disease
   • Immunity: active and passive
   • Vaccines and immunisation
   • Summary

   Health and disease The World Health Organization describes health as a state of complete physical, mental and social well-being, not just the absence of disease. A disease is any condition that disturbs the normal working of the body or mind. A pathogen is a disease-causing organism, such as a virus, bacterium,…