Stem cells - specific adaptations

• an adaptation of a sperm cell is a tail to move them towards the egg
• an adaptation of a sperm cell an acrosome that releases enzymes to digest the egg membrane
• an adaptation of a nerve cell is a dendrite which transfers electrical messages to other neurones
• an adaptation of a nerve cell is the Myelin Sheath which prevents electrical signals from leaking out the nerve cell
• an adaptation of a muscle cell is a filament of protein that allows the muscle to contract
• an adaptation of a Xylem is that the walls are thickened by lignin, which strengthens the plant
• an adaptation of the phloem is that they have small holes at the end to transport nutrients where they are needed