Botany | Photosynthetic Prokaryotes | Dr. Sara Browning | PBA Fall 2024
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9 Terms
Green and Purple Bacteria
Sulfur bacteria studied by Van Neil led to his generalized photosynthesis equation
Halobacterium
•Tolerates high salt
Bacteriorhodopsin
Pigmented protein found in abundance in the plasma membrane of the salt-loving archaeon Halobacterium halobium; pumps protons out of the cell in response to light.
Cyanobacteria
"Blue-green algae"
Cyanobacteria
Characteristics
- Tiny prokaryotic cells often with slimy sheath
- Unicellular or filamentous
- Phycobilins- phycocyanin and phycoerythrin; Chl a
- Evolved oxygenic photosynthesis
- Dominant life form for ~ 85% of Earth's history
Eutrophication
A process by which nutrients, particularly phosphorus and nitrogen, become highly concentrated in a body of water, leading to increased growth of organisms such as algae or cyanobacteria.
Nitrogen Fixation in Heterocysts
Prochlorophytes
Cyanobacteria? chlorophyll a, b; carotenoids; no phycobilins
Prochlorococcus
Most numerous photosynthetic organism
Tiny side and genome
40-50% of biomass of marine phytoplankton!
Extremely important global O2 producers
Note 
Flashcards (39)