- Smallest unit of a living thing that can perform all life processes.
- All living things are made of cells
- Different cells have different jobs
- Made of different parts
- Plant and animal cells have some parts that are the same and some parts that are different
- Microscopic- can only be seen through a microscope
- Microscope- tool used to see things too small to see with just your eyes
- Work together to perform a job
- A group of cells becomes a tissue; a group of tissues become an organ; a group of organs become an organ system
Major Cell Parts
The 3 major parts that almost all cells have are the:
- Nucleus- the control center for the cell. Instructions for the cell’s activities are stored here.
- Cell Membrane- the cell’s outer border. It separates the cell from the environment, and decides what comes in and out of the cell.
- Cytoplasm- contains the things that the cell needs to carry out its life processes.
Plant cells have the nucleus, cytoplasm, and cell membrane just like animal cells, but they also have a few things that are different. Some of these are:
- Chloroplasts- special cell parts that trap the Sun’s energy to make food
- Cell Wall- this is outside of the cell membrane and helps to support and protect the cell
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