Bill nye cells

Cells _____________; they eat, reproduce, and drink.

• are different

• are dividing

• have DNA

• are alive

Different kinds of cells have _______________

Choose the best answer.

• one purpose.

• one type of job.

• different types of jobs.

• several nuclei to control them.

Some animals only have _____________.

• one cell.

• cell walls.

• white blood cells.

• genes.

_____________ a very long molecule that has chemicals in a special order.

• A nucleus is

• Genes are

• DNA is

• Skin is

In all cells _________________ controls the cell.

Choose the best answer.

• the DNA

• mitosis

• osmosis

• the nucleus

Cells _________________ to make new cells.

Choose the best answer.

• are alive

• reproduce

• grow quickly

• use white blood cells

_______________ is when cells divide.

• A cell membrane

• A cell wall

• Mitosis

• DNA

The fastest growing organ in humans is the _____________.

• bones

• lungs

• skin

• nucleus

Only ____________ cells have a cell wall instead of a cell membrane.

• plant

• animal

• white blood

• living

_______________ cells help to fight viruses and bacteria.

• Skin

• DNA nucleus

• White blood

• Mitosis osmosis