Unicellular and Multicellular Organisms

Unicellular organisms are made up of a single cell, while multicellular organisms are made up of many cells.

Unicellular means consisting of one cell.

Multicellular means consisting of multiple cells.

Amoeba is an example of a unicellular organism.

A dog is an example of a multicellular organism.

Humans have specialized cells because their bodies have several systems that require cells with different functions.

Red blood cells are an example of specialized cells that carry oxygen.

The main characteristic of unicellular organisms is that they perform all life processes within a single cell.

The digestive system is an example of a system in multicellular organisms.

Unicellular organisms often reproduce asexually through processes like binary fission.