Cell as system

The cell takes the materials it needs and uses them to get ...........................

• food

• waste

• energy

• matter

............... allow water to pass to and from the cell.

The body of ........... is composed of one cell only.

• insect

• plant

• human

• bacteria

bacteria can't be seen by the naked eye.

The cell of .................. are smaller than plant and animal cells.

unfertilized bird's egg contains.................. cell(s).

New cells come from existing cells.

• false

• true

during the growth of the plant, the size of the cells increases.

• true

• false

All cells don't have nucleus.

• False

• True