Non-proteobacterial Gram-Negative Bacteria Flashcards
1
Q
16S ribosomes
A
- mutations occur
- organism survived
- use mutation to compare organisms
2
Q
Deinococcus-Thermus
A
- aerobe
- rods or cocci
- Gram-positive strain, ultrastructure is Gram-negative
- cells in pairs or tetrads
- proteins resistant to radiation
3
Q
chloro
Green Sulfur Bacteria
A
- H2S or H2 as electron donor
- sulfur and sunlight for photosynthesis
- no oxygen: ANOXYGENIC
- chlorosomes; bacteriochlorophylls
4
Q
Cyanobacteria
A
- normal photosynthesis
- fix carbon from atmosphere into the ocean
- produce toxins and form survival structures
- H2O as electron donor
- OXYGENIC
- phycobilisomes
5
Q
Trichomes (cyan)
A
rows of cells in close contact with each other over a large area
6
Q
Heterocyst (cyan)
A
- thick walls
- nitrogenase
7
Q
Hormogonia (cyan)
A
small, motile fragments
8
Q
Akinete (cyan)
A
non-motile, dormant, thick-walled resting cells
9
Q
Phylum Planctomycetes
A
- role in nitrogen cycle
- lack peptidoglycan
10
Q
Intracytoplasmic membrane
A
separated from plasma membrane by paryphoplasm
11
Q
Candidatus Brocadia anammoxidans
A
- not a true taxonomic entity
- anamoxosome
- electron donor: ammonium
- electron acceptor: nitrite
12
Q
Annamox Reaction
A
- nitrite as electron donor: biomass production
- nitrite as electron acceptor: ammonium oxidation, produce nitrogen gas
13
Q
Hydrazine
A
- formed from ammonium and hydroxylamine
- oxidized by hydrazine oxidase
- forms nitrogen
14
Q
Anabolic reaction
A
2NO2- + CO2 + H2O → CH2O
+2NO3-
15
Q
Catabolic reaction
A
NO2 - + NH4 + → N2 + H2O
