Unicellular Organsims

Unicellular Microorganisms

Compare the similarities and differences of the two types of unicellular microorganisms.

Multiple Choice

What does the prefix uni- mean?

• Many

• One

• Some

Unicellular organisms depend on ONE cell for all its needs.

• Obtain Energy

• Reproduce (Cell Division)

• Ability to Move

• Respond to Their Environment

• Respire (Breathe)

• Eliminate Waste

Multiple Choice

What part of the bacteria cell is used for movement?

• Cell Wall

• Cytoplasm

• Flagellum

Multiple Choice

Through what cell part would a unicellular organism take in oxygen and get rid of waste?

• Vacuole

• Cell Membrane

• Cytoplasm

Two Types of Unicellular Organisms

Prokaryotes and Eukaryotes

Prokaryotes

• Pro (means before) and Kary (means nucleus)

• No Nucleus

• Extremely Small

• Examples include Bacteria and Archaea

Archaea

Bacteria make up most of the prokaryotes. Archaea are typically found in extreme environments such as hot springs or near volcanoes. The difference between bacteria and archaea is their type of cell wall: archaea have a thicker cell wall that is very strong.

Eukaryotes

• Eu (means true) and kary (means nucleus)

• Has a nucleus

• Some have chloroplasts

• 10 to 100 times larger

• Examples: Amoeba. Euglena, Paramecium (Protists)

Multiple Choice

Most unicellular organisms eat other organisms for food. But some can make their own food through photosynthesis. What cell organelle must they have for this process.

• Nucleus

• Mitochondria

• Chloroplasts

Similarities in Cell Parts & Functions

• Cell Membrane

• Cytoplasm

• DNA

• Ribosomes

Multiple Choice

What unicellular organism is shown? Use google to help

• Amoeba

• Bacteria

• Fungi

• Euglena

Multiple Choice

What unicellular organism is shown? Use google to help

• Amoeba

• Bacteria

• Fungi

• Euglena

Multiple Choice

What unicellular organism is shown? Use google to help

• Amoeba

• Bacteria

• Fungi

• Euglena

Multiple Choice

If an organism is unicellular but has a nucleus, then it belongs to this category of Eukaryotes.

• plant

• animal

• protist

• bacteria

Multiple Choice

A pseudopod literally means...

• small hair
• long tail
• no nucleus
• false foot

Multiple Choice

This unicellular organism uses pseudopods to capture and absorb its food! Use google to help

• Amoeba

• Paramecium

• Euglena

• Volvox

Multiple Choice

Protist require moist in their environment to survive

• True
• False

Multiple Choice

What is Cilia?

• A tail like structure that help protist move
• Hair like fibers that help protist move
• A place where spores are kept
• A fake foot that help protist move

Multiple Choice

What is Flagella?

• A tail like structure that help protist move
• Hair like fibers that help protist move
• A place where spores are kept
• A fake foot that help protist move

Multiple Choice

Which type of cell has a nuclear membrane.  

• Prokaryote
• Eukaryote

Multiple Choice

What type of cell(s) do Protist have? 

• Eukaryotic 
• Prokaryotic