Anisah Afifah's Weblog

   Cells are the smallest living unit in our body. We can only see it through a microscope.

   There are two types of cells, animal cells and plant cells. Both of them are made up of:

• Cell membrane
• Protoplasm (nucleus plus cytoplasm)

    Three additional parts are only available in plant cells. They are:

• Cell wall
• Vacuole
• Chloroplast

(Please click this picture for a clearer image) This picture shows the parts of a plant cell (left) and a animal cell (right).

   Their Physical Properties are:

These are their Physical Properties

   The function of these parts are:

The above image shows the functions of these parts

Below are the differences and similarities between both types of cells:

Unicellular organisms are living things that only have one cell. On the other hand, multicellular organisms have lots of cells. Here are some examples of unicellular and multicellular organisms:

(Please click\for a clearer image) Examples of Muticellular and Unicellular Organisms

Forming an organism

A tissue is a group of cell that does similar work. Each organs are made of different types of tissues. Some example of organs are:

• Brain
• Kidney
• Lungs
• Liver
• Heart

Different organs with different functions work together to complete one system. Here are some examples of systems:

The table shows a few example of Systems with included organs

 And these systems form an organism by working together.

 The above explains how lots of cells share their work to form an multicellular organism and it is called the cell organisation. The chart below shows the cell organisation:

 However a unicellular organism has to do all of the work by itself. The cell does everything to keep the organism alive and healthy from respirating and digesting to excreting waste materials.

Please click here for my Science posts about…

• Microorganisms

• How Animals Take Care of Their Eggs and Young

• Food Chain and Food Web

• Seed and Fruit Dispersal