Science Cells

By: Afridi 803

What are cells?

Cells are the main component for living organisms. Without cells in organisms there will be no life.

Plant cell

These are some cells that are in a plant:

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.

MR. GREEN

Mr green is a term used to evaluate if a organism is living or non living.


M- Movment

R- Reproduction

G- Groth

R- React to stimuli

E- Exchange of gases

E- Excrete

N- Nutrition

Parts of a microscope

A microscope is used to deeply look into a specimen.


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.

Big image

The picture above is a diagram of the plant cell and its parts.

Osmosis and Diffusion

Osmosis is the diffusion through semi permeable membrane from a diluted solution to a concentrated solution. An example of osmosis is absorption of water through plant roots.


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.