Parts of a Sperm Cell:
Tail
Head
Nucleus
Mitochondria
Acrosome

The stages of Cell Cycle:
1- Initial Growth
2- Mitosis
3- Cell Division

Use of Stem Cells:
Plant Clones
Stem Cell treatment
Therapeutic Cloning

Stem Cells are found in:
Bone marrow
Enzymes
Plant Meristems

Disadvantages of stem cells:
- Viral Infections
-Ethical Beliefs

Factors Effecting Diffusion:
- Temperature
- Membrane Surface Area
- Concentration Gradient

Exchange Surface Adaptations:
- Large Surface Area
- Ventilation
- Thin Membrane
- Blood Supply

Features of Osmosis
- Water Movement
- Net Movement of Water
- Partially Permeable Membrane

Active Transport takes place in:
- Guts of Humans
- Roots of Plants