2A - Evolution Flashcards
Chapter 3
What is a Niche?
Role in an environment
What is an Organism?
Individual of a species
Organism groups in order of least complex to most complex?
domain
kingdom
phylum
class
order
family
genus
species
Three domains of life
Bacteria, Eukarya, Archea.
Bacteria
- Prokaryotic, unicellular organisms
- Lack membrane bound cells
- Reproducea sexually
- Heterotrophic by absorbtion
- Autotrophic by chemo or photosynthesis
- Move using flagella
- “binary fission” = cloning to reproduce
What are Eukarya?
- Eukaryotic, unicellular to multicellular organisms
- Membrane bound nucleus
- Sexual reproduction
- Phenotypes and nutrition are diverse
- Each kingdom has specializations
- Flagella, if present, have a 9+2 organization.
What are the four kingdoms within the domain or Eukarya?
Protisa, Fungi, Plantae, and Animalia
Whats some more information on Protisa?
- “Protists”
- Often parasitic
- between a plant and an animal cell
- mostly multicellular, sometimes unicellular
How do you classify/ name organisms?
- Bimomial nomenclature
- Includes the organisms genus and species, usually in latin
- Genus goes first and is capitalized
- Species os second and is little letters
- ITALICIZED OR UNDERLINED
What are Archea?
-Prokaryotic unicellular organisms
- Lack member bound nucleus
- Many are autotrophic by chemosynthesis, some are heterotrophic by absorbtion
- Unique RNA base sequence
- Distinctive plasma membraine and cell wall chemistry
- Extremophiles
dichotomous key
A dichotomous key is a branched or stepped process that can
be used to identify organisms.
What affects patterns of distribution of life
Abiotic factors such as:
1. climate,
2. latitude,
3. elevation,
4. temperature,
5. humidity,
6. moisture,
7. salinity,
8. and light .
Habitat
A place or area with a biome or ecosystem that has a particular set of biotic and abiotic characteristics
Basically, where organisms live.
Levels of organization
species/indiv
pop
com
ecos
biome
biosphere
What is an organisms range?
The geological area where the organism is found
