-Numerous ‘feet’ extensions (pseudopodia) which allow movement, and catch food.
An amoeba on a wash cloth These little things are bacteria! Single-celled Organisms
Unicellular animals found in fresh water pools
Feed on bacteria
Covered in cilia which beat in a wave for movement
Cell division Tiny hairs (cilia)
Bell shaped heads have tiny hairs (cilia) which waft food towards them.
- Cilia are also used for movement.
Each head is attached to a stalk which anchors to a surface.
-When disturbed it can contract the stalk for protection.
- Forms a powdery, green covering on the bark of trees
Very common single-celled algae
Can withstand drought and is able to get water directly from the air
divides rapidly in good, moist conditions and spreads quickly
Yeast - Unicellular fungus - Cell is dividing - Ferment sugars (used in brewing and bread making) These circles are formed when the cell divides. The new cell ‘ buds off’ and leaves a scar.
The nucleus of a cell carries all the genetic information. Chromosomes inside the nucleus contain all the genetic information.
Every nucleus in every cell of an organism contains identical copies of these chromosomes. The number of chromosomes present in an organisms’ cells depends on its species. e.g Human Male 46 Chromosomes