Bill Nye Cells

Cells _____________; they eat, reproduce, and drink.

• are different

• are dividing

• have DNA

• are alive

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Different kinds of cells have _______________

Choose the best answer.

• one purpose.

• one type of job.

• different types of jobs.

• several nuclei to control them.

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Some animals only have _____________.

• one cell.

• cell walls.

• white blood cells.

• genes.

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

• A nucleus is

• Genes are

• DNA is

• Skin is

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In all cells _________________ controls the cell.

Choose the best answer.

• the DNA

• mitosis

• osmosis

• the nucleus

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Cells _________________ to make new cells.

Choose the best answer.

• are alive

• reproduce

• grow quickly

• use white blood cells

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_______________ 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

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_______________ cells help to fight viruses and bacteria.

• Skin

• DNA nucleus

• White blood

• Mitosis osmosis

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