By: Afridi 803
What are cells?
Nucleus: the nucleus is the main control centre in a cell
Cell wall: a thick membrane that surrounds the outside of the cell. This gives it most of its structure.
Nuclear membrane: A membrane that surrounds the outside of the nucleus.
Nucleolus: This is where Ribosomal RNA is produced.
R- React to stimuli
E- Exchange of gases
Parts of a microscope
Here are a few parts of a microscope.
Base: The bottom of the microscope. Used for support.
Lens: Lens that you look through. Usually 10X or 15X power
Stage: Flat platform where you place your slides.
Arm: Supports the tube and connects it to the base.
illuminator: this is the light source that provides light to better investigate the specimen.
The picture above is a diagram of the plant cell and its parts.
Osmosis and Diffusion
Diffusion is the movement of particles from a region of high concentration to a lower concentrated area. A good example of diffusion is when you cook food in your kitchen the odour spreads around the house.