1 What kind of cells do humans have?
2 How many different types of cells do we have in our body?
3 Why do we have different types of cells in our body?
4 What is the most simple type of cell, without a nucleus?
5 Why do the different types of cells in our body look different?
6 What is the purpose of a white blood cell?
7 Plant cells have both mitochondria and chloroplasts. Why do plants need mitochondria in addition to chloroplasts?