CHARACTERISTICS OF LIVING THINGS
- Made of cells
- unicellular-single-celled organisms (bacteria)
- multicellular composed of many cells
- Cells are composed of chemicals:
- water
- carbohydrates - energy source
- protein - building materials
- lipids - building materials
- nudeic acids - genetic material
- Use energy for growth and repair
- Grow and develop
- Respond to their surroundings:
- stimulus - changes in an organism's surroundings that causes the organism to react
- response - an action or change in behavior
- The ability to reproduce or produce offspring that are similar to the parents
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| My sister, Ania, made this. |
THE NEEDS OF LIVING THINGS
- Energy
- food is a source of energy
- plants are autotrophs - they make their own food - by capturing sun's energy and using it with carbon dioxide
- heterotrophs - can't make their own food they obtain energy by eating autotrophs or other heterotrophs. Animals are heterotrophs.
- Water
- it's needed to obtain chemicals from surroundings
- break up food
- grow
- move substances within the body
- reproduce
- Living space
- a place to get food and water and find shelter
- Stable internal conditions (homeostasis)
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