A ________ is the basic structural and functional unit of all living organism. (building blocks of life)

____________ is a fundamental proposal in biology that contains the three principles:

1- All living things are made of one or more cells

2- Cells are the basic unit of structure/function of all life

3- Cells come from cells, and pass genetic information on to their daughter cells.

The boundary that controls what enters and leaves the cell is called the __________.

Proteins that span the entire membrane and create a channel for solutes and molecules to move in and out of the cell are called _________________.

____________ cells contain a nucleus, and _____________ cells do NOT contain a nucleus.