DOMAINS AND KINGDOMS (pgs 48-49)

Organisms are placed into domains and kingdoms based on their cell type, their ability to make food and the number of cells in their bodies.

DOMAINS

· BACTERIA: Are prokaryotes are organisms whose cells lack a nucleus, are autotrophs.

Nucleus is a dense area in a cell that contains nucleic acids.

· ARCHAEA: Can be found in the most extreme environments on earth.

Are unicellular prokaryontes, some are autotrophs.

Their structure and chemical make up, is different from that of bacteria.

· Eukarya: Eukaryontes organisms with cells that contain nuclei

Scientists classify organisms in the domain Eukarya into four kingdoms.

1. PROTIST: Organisms can not be classified as animal, plant or fungus

Autotrophs and heterotrophs, or unicellular and multicellular.

2. FUNGI: mushrooms, molds and mildew are all fungi. Most fungi are multicellular, eukaryontes and heterotrophs.

3. PLANTS: Are multicellular eukaryontes and autotrophs. They provide food for most of heterothophs. This kingdom includes a great variety of organisms like flowers, trees, mosses…

4. ANIMALS: All are multicellular eukaryontes and heterothops. They have different adaptations that allow them to locate food, capture it, eat it, and digest it.