the egg cell is one of the largest cells in the body. the nucleus contains genetic information about the mother. there is a large store of food in the vacuoles. only one sperm can enter the egg cell...
Without cell specialisation, the organism can never become more than a simple protozoan because it's one cell must perform all of the metabolic functions to keep the cell alive and allow it to...
Sperm cells have flagella which allow it to propel itself (or "swim") effectively to the egg, they also have mitochondria packed in their "head" as energy is needed (in the form of ATP) for the...