Classification Flashcards
(28 cards)
Domains of life (3)
Archaea - prokaryotes in extreme habitats
Bacteria - Cyanobacteria, Eubacteria
Eukarya - Protozoans, fungi, plants, animals
Prokaryotic cells
Hydrocarbon chains attached to glycerol
Do NOT have peptidoglycan
Archaea
Prokaryotic cells
unbranched fatty acid chains
have peptidoglycan
Bacteria
Eukaryotic cells
unbranched fatty acid chains
No peptidoglycan
Eukarya
Archaebacteria (types)
Methanogens - no oxygen
Thermophiles - hot environments
Halophiles - salty environment
True bacteria
Cell wall with complex carbohydrates
Occur in every habitat
Eubacteria
Bacteria phylum
Chloroflexi (isolates phenotypes)
Proteobacteria (gram-negative)
Spirochetes (motility)
Cyanobacteria (photosynthetic)
Firmicutes (Endospore formign bacteria)
Actinobacteria (gram-positive)
Vibrio
Spirillum
Spirochete
commas
corkscrew shape
different kinds
Heterotrophic
Primary decomposers
Produce spores
Mostly unicellular
Cell walls made of chitin
Fungi
Common groups of fungi (morphology)
Yeast - unicellular
Molds - filamentous
fungi hypha vs mycelium
thread
vs
network
fungi based on nutrition (3)
Saprophytic - dead
Parasitic - live on
Symbiotic - live with
Fungi based on spores
Zygomycotes - zygote
Ascomycetes - sac (edible)
Basidiomycetes - club
Deuteromycetes - Fungi imperfecti
The Chytrid fungus that killed frogs
Batrachochytrium dendrobatidis
Most diverse organisms
usually unicellular
cell wall sometimes present, cellulose
eukaryotic
Protista
Main groups of protista (3)
Animal-like : heterotrophs (like protozoans)
Plant - like : Photosynthetic (like algae)
Fungus - like : decomposers (like mold)
Types of algae (6)
Chlorophyta - green
Euglenophyta - Euglenoids
Dinoflagellate - Dinoflagellates
Chyrsophyta - Golden-brown
Phaeophyta - brown
Rhodophyta - Red
Infects all forms of life, surrounded by protein coat, small infectious agent
Virus
Why is virus not a livign organism?
Lack cells and own anabolic machinery
Classification of viruses (4)
Morphology (capsid, envelope)
Size of virion
Type of host (Dermotrophic, neurotrophic)
Genome composition
Short pieces of naked RNA
No protein coat
Does not code for proteins
Smallest infectious pathogens
Only one disease in humans which is Hepatitis D
Viroids
Famous viroid.
Potato Spindle Tuber Viroid
Full name of Prions
Proteinaceous Infectious Particle
Resistant to nucleases
Abundant in brain
Does not use energy
Do not die
Prions
