Unit 7 Lesson 3

This domain is characterized by ancient bacteria that can live in extreme environments, such as volcanoes.

• Archaea
• Bacteria
• Eukarya
• Prokarya

Organisms that are classified as autotrophic are able to-

• be seen with the human eye
• move
• reproduce
• make their own food

Characteristics of an organism:
1. Made of many cells
2. Each cell has a nucleus
3. Eats other organisms
4. Can move itself around
Which word would describe this organism?

• Autotrophic
• Prokaryotic
• Immotile
• Multicellular

Characteristics of an organism:
1. Cells have nuclei
2. Cannot move itself
3. Makes its own food
4. Made of many cells
Which word would NOT describe this organism?

• Multicellular
• Autotrophic
• Prokaryotic
• Immotile

Scientists are studying an organism that can make its own food. It is made of trillions of cells, and each cell has its own nucleus. Which pair of words could be used to describe this organism?

• Autotrophic and prokaryotic
• Autotrophic and eukaryotic
• Heterotrophic and eukaryotic
• Heterotrophic and multicellular

Protists are a group of mostly single-celled organisms. All protists are considered eukaryotic. What makes protists eukaryotic?

• All protists can make their own food
• All protists contain a cell nucleus
• Every protist is able to move itself around
• Every protist is classifies as unicellular