Classification of Life Kingdoms and Domains Why classify? To study the diversity of life, biologists use a classification system to name organisms and group them in a logical manner.
Words to Remember: Taxonomy is the branch of biology that organizes living things based on shared characteristics and evolutionary history A domain is the largest group into which life is organized. There are 3 domains: Archaea, Bacteria, and Eukarya. A prokaryote is an organism whose cells do not have a nucleus or membrane-bound organelles. Eukaryotes are organism with cells that have a nucleus enclosed by a membrane.
Levels of Classification (Taxon/Taxa) Kingdom Continent Phylum Country Class
State Order County Family City
Genus Street species House # KINGDOM Animalia
PHYLUM Chordata CLASS Mammalia ORDER Carnivora FAMILY Ursidae GENUS Ursus SPECIES Ursus arctos King
Phillip Came Over For Good Spaghetti Binomial A two name naming system that Nomenclature
was developed by a Swedish scientist named Linnaeus Carolus Example: Tyranosaurous rex
The Genus name is CAPITALIZED, followed by the Species name in lower case. Both names are Underlined or put in Examples of Scientific Names Wolf: Canis lupus Cat: Felis catus CHicken: Gallus gallus
Human: Homo sapiens Emperor penguin: Aptenodytes forsteri Apple: Malus domestica Sunflower: Helianthus annuus Carrot: Daucus carota The 3-Domain System Domain: is a more inclusive category than any other larger than a kingdom.
The Three Domain System Domain: is a more inclusive category than any other larger than a kingdom. Three Domains: Eukarya: composed of protists, fungi, plants, and animals. Bacteria: corresponds to eubacteria Archaea: corresponds to the kingdom archaebacteria. Domain Bacteria
Unicellular and prokaryotic. Thick rigid cell walls that surround a cell membrane. Cell walls contain a substance known as peptidoglycan. Domain Archaea
Unicellular and prokaryotic members that live in some extreme environments volcanic hot springs, brine pools, and black organic mud totally devoid of oxygen. Cell walls lack peptidoglycan and cell membranes contain unusual lipids. Domain Eukarya
Consists of all organisms that have a nucleus. Organized in the following kingdoms: Protists, animals, plants, and fungi. (this will take up pages 5 -6) Go to page 459 and copy the
entire table. Binomial Nomenclature A two name naming system that was developed by a Swedish scientist named Carolus
Pictures go in the bottom Kingdom ARCHAEBACTERIA Cell Type:_____________ Cell Structures:________________ Number of Cells:________________ Mode of Nutrition:____________________ Examples:_______________________
Kingdom EUBACTERIA Cell Type:_____________ Cell Structures:________________ Number of Cells:________________ Mode of Nutrition:____________________ Examples:_______________________ The 6 Kingdoms Page 7
Kingdom Eubacteria = peptidoglycan present in cell walls = lives almost anywhere The 3 shapes of bacteria (p.473) Cocci = Bacilli = Spirilla =
Page 8 Kingdom Archaebacteria - No peptidoglycan - Loves extreme environments (hot springs, brine pools, mud, etc) Bacterial Growth and Reproduction (p475) 1.Binary Fission (Define & Draw for all 3)
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