Cells

Cells

Cells

• All living things are made of cells.

• The cell is the smallest unit of a living thing that still has the characteristics of the whole organism.

Multiple Choice

Is the cell the smallest unit of a living thing?

• Yes

• NO

Cells

• There are some single-celled living things, but most forms of life have many cells.

• Very simple forms of life have prokaryotic cells.

Multiple Choice

Which cell has very simple forms?

• Prokaryotic cells

• Eukaryotic cells

Cells

• The nucleus is not separate and organized.

• The nucleus is all over the inside of the cell.

Multiple Choice

What is a nucleus?

• An organelle.

• DNA molecules.

• Variety of proteins.

• All of the above.

Cells

• Living things with many cells have eukaryotic cells.

• The nucleus is in its own spot in the cell.

Cells

• Cells can last for a short amount of time or a long time.

• For example, some white blood cells in your body last only a few hours.

• Brain cells can last for your lifetime.

• Your body has more than 10 trillion cells.

Multiple Choice

How long can your brain cells last?

• 2 days

• 1 week

• 50 years

• Your lifetime.