Types of OrganismsUnicellular Organisms

vs.Multicellular Organisms

What is an Organism?

Definition:

Organism – anything that can live on its own

Unicellular Organisms

Unicellular Organisms

Definition:Unicellular organism – an organism made of

only one cell

Information:These organism are very small and need to

be seen with a microscope.

Unicellular:Common Names

• Microscopic Organisms

• Microorganisms

• Really small living things

Examples of Unicellular Organisms

• Amoeba

• Bacteria

• Unicellular Fungi

• Unicellular Yeasts

Images of Unicellular Organisms

Multicellular Organisms

Multicellular Organisms

Definition:Multicellular organism – an organism made

of two or more cells

Information:These organisms are able to be seen with

the naked eye.These organisms need all parts of itself to

survive.

Common Names

• Many – celled organisms• Eukaryotic organisms• Mammals• Birds• Reptile• Fish• Many others…

Examples of Multicellular Organisms• Humans

• Cats

• Dogs

• Insects

• Birds

• Flowers

• Mold

• Trees

Images of Multicellular Organisms

Sample Question

Question: What type of organism is a hamster?

Answer: Multicellular

Page 1

Sample Question

Question: What type of organism is bacteria?

Answer: Unicellular

Page 1

Bacteria

• A unicellular microorganism lacking organelles and an organized nucleus

• Some can cause disease.

How do they reproduce?

• Every bacteria that lives today is the same bacteria that’s been around for ages and ages.

• When bacteria go through the cell division process they can survive on their own.

• Bacteria Dividing

Stand Up!

• Stand on the left hand side of the room if you think all bacteria is bad.

• Stand on the right hand side of the room if you think all bacteria is good.

Listen Up!

• Bacteria is actually helpful!

• Do you know anyone with diabetes?

• Using genetic engineering, we can actually make insulin using bacterium.

How is it done?

• Animation

Insulin from Bacteria

What else do we do with bacteria?

• Oil Eating

bacteria• Yogurt• Cheese• Sauerkraut• Pickled Ginger• Wine/Beer• Olives• Dill Pickles• Soy Sauce

Oil Eating Bacteria

• Gulf Oil Spill

Write 5 Test Questions

• Example: – Explain the difference between unicellular

and multicellular organisms.– How can bacteria be useful?

• Trade with a classmate • See if you can answer the questions.

Read Article – Your Choice

1. Write three questions you would like to ask a scientist who is working on a new way to use bacteria.

2. Write three reasons scientists should continue researching ways to use bacteria in industry.

3. Draw four ways bacteria is used in industry.

What Interested Me?

• Write in your notes what interested you.

Why Should I Care?

• Why should you care about what we talked about today?