Kingdoms of Organisms

The Five Kingdoms of Life

6th Grade Science

May 23^rd, 2023

Multiple Select

Choose all that are correct: which of these are organisms (living things)?

• Some cells have a nucleus

• Nucleus - an organelle in a cell that holds its DNA

• The nucleus is surrounded by a membrane

The Nucleus of A Cell

• A eukaryote is a cell that does have a nucleus

• "Protists are unicellular, eukaryotic organisms.

Eukaryotes

• A prokaryote is a cell that does not have a nucleus

• "Bacteria are made of prokaryotic cells."

Prokaryotes

Prokaryotes and Eukaryotes

• Every organism we've discovered belongs to one of six kingdoms:

  • Animalia (animals)

  • Plantae (plants)

  • Fungi

  • Protista (protists)

  • Arcaebacteria

  • Eubacteria

The Kingdoms of Life

How Do We Put Organisms Into Kingdoms?

Organisms are placed into a kingdom based on:

• Whether they are a prokaryote or eukaryote

• Whether they are unicellular or multicellular

• Whether they have a cell wall

• How they obtain nutrients

Match

Review Question: match each vocabulary term to its correct definition.

• Prokaryote

• Eukaryote

• Nucleus

A cell that does not contain a nucleus

A cell that contains a nucleus

An organelle that protects a cell's DNA in a membrane

• A cell that does not contain a nucleus

• A cell that contains a nucleus

• An organelle that protects a cell's DNA in a membrane

All animals:

• Are eukaryotes

• Are multicellular

• Do not have cell walls around their cells

• Are heterotrophs (aka consumers; they cannot produce their own food)

Animalia (Animals)

All plants:

• Are eukaryotes

• Are multicellular

• Have cell walls around their cells

• Are autotrophs (aka producers; they can produce their own food)

Plantae (Plants)

Fungi (the singular is fungus):

• Are all eukaryotes

• Are mostly multicellular

• All have cell walls

• Are all heterotrophs

Fungi

Protists:

• Are all eukaryotes

• Are mostly unicellular

• May have cell walls

• Can be either autotrophs or heterotrophs

Protista (Protists)

Archaebacteria:

• Are all prokaryotes

• Are all unicellular

• All have cell walls

• May be either autotrophs or heterotrophs

• Are extremophiles (live in the most extreme places on Earth)

Archaebacteria

Eubacteria:

• Are all prokaryotes

• Are all unicellular

• Mostly have cell walls

• May be either autotrophs or heterotrophs

• Live everywhere on Earth

Eubacteria

Multiple Choice

An organism is unicellular, prokaryotic, and lives on your desk. It is most likely:

• An archaebacteria.

• A eubacteria.

• A fungus.

• A plant.

Multiple Choice

An organism is multicellular, has cell walls, and is a heterotroph. It is most likely:

• An animal.

• A plant.

• A fungus.

• A eubacteria.

Multiple Choice

An organism is unicellular, eukaryotic, and is an autotroph. It is most likely:

• A fungus.

• A protist.

• An archaebacteria.

• A eubacteria.