There are over 2 million known species of organisms that are classified into 6 major kingdoms. The document then provides details about the characteristics of each kingdom, including whether organisms are prokaryotic or eukaryotic, unicellular or multicellular, and how they obtain nutrients. It also discusses the scientific naming of species using binomial nomenclature with the genus and species names.

2. Classifying LifeClassifying Life
 There are over 2 million known speciesThere are over 2 million known species
of organisms.of organisms.
 All life is classified into 6 majorAll life is classified into 6 major
kingdoms.kingdoms.

4. Kingdom ArchaebacteriaKingdom Archaebacteria
 Bacteria live in harsh or extremeBacteria live in harsh or extreme
environmentsenvironments
 UnicellularUnicellular
 ProkaryoticProkaryotic
 Heterotrophic orHeterotrophic or
AutotrophicAutotrophic
 Cell walls withoutCell walls without
peptidoglycanpeptidoglycan

5.  Most other bacteriaMost other bacteria
 Live everywhereLive everywhere
 Some cause diseaseSome cause disease
 Some are helpfulSome are helpful
 UnicellularUnicellular
 ProkaryoticProkaryotic
 Heterotrophic orHeterotrophic or
AutotrophicAutotrophic
 Cell walls withCell walls with
peptidoglycanpeptidoglycan

6.  Most “diverse” kingdomMost “diverse” kingdom
 AquaticAquatic
 EukaryoticEukaryotic
 Mostly unicellular (algae are the exception)Mostly unicellular (algae are the exception)
 Heterotrophic or autotrophicHeterotrophic or autotrophic
 Ex.) Paramecium, amoeba, euglenaEx.) Paramecium, amoeba, euglena

7.  EukaryoticEukaryotic
 Multicellular (except yeast)Multicellular (except yeast)
 Mostly terrestrialMostly terrestrial
 Heterotrophic - Obtain food throughHeterotrophic - Obtain food through
absorptionabsorption
 Cell walls made of chitinCell walls made of chitin

8.  Eukaryotic and multicellularEukaryotic and multicellular
 Cell walls made ofCell walls made of cellulosecellulose
 AutotrophicAutotrophic
 ChloroplastsChloroplasts

9.  Multicellular and eukaryotic
 Heterotrophic
 Digest food internally
 No cell walls

10.  What do the following words have in common?What do the following words have in common?
 chien, inu, perro.chien, inu, perro.

11.  In science, each species is given a “scientificIn science, each species is given a “scientific
name.”name.”
 Ex.)Ex.) Canis familiarisCanis familiaris (scientific name for dog).(scientific name for dog).
 UniversalUniversal
 Latin.Latin.
 System of naming called “binomial nomenclature”System of naming called “binomial nomenclature”
 Carolus LinnaeusCarolus Linnaeus

12.  Genus name (first word) - always capitalizedGenus name (first word) - always capitalized
 Species name (second word) - never capitalizedSpecies name (second word) - never capitalized
 italics or underlineditalics or underlined
 Ex.)Ex.) Homo sapienHomo sapien oror Homo sapienHomo sapien

13.  Some organisms have theSome organisms have the
same genus name.same genus name.
 Ex.)Ex.) Felis domesticusFelis domesticus
Felis leoFelis leo
Felis tigrisFelis tigris
Same genusSame genus
Different species.Different species.
What is a species?What is a species?