Unicellular Organisms

What are all living things made up of?

• cells

• blocks

• amoebas

How many cells are unicellular organisms made of?

• One cell

• Many cells

What are some processes that both unicellular and multicellular organisms do to stay alive?

• grow, eat, excrete, and reproduce

• Smell, see, taste, and touch

Some unicellular organisms have small hair-like structures that help the cell move. What are these small hairs called?

• Cilia

• Fingers

Single-celled organisms do not have organs; they have organelles.   These organelles allow the organism to do these three processes:

• eat, sleep, and get rid of wastes

• digestion, respiration, and water regulation

True or false: A species must be able to reproduce.

• True

• False

Every organism needs to reproduce. When cells reproduce, what is passed onto the offspring?

• money and investments

• DNA (genetic information)