Animal cells and life processes

What is a cell?

What are the parts of an animal cell?

How do cells take in and use food?

What products do animal cells make?

Can an animal really have only one cell?

How are we different from amoebas?

What messages do cells send in an animal's body?

If cells do not grow, how do animals get bigger?

Why do cells need water?

How do cells get rid of waste?