Ch. 26: Cyanobacteria
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phycobilins
phycoerythrin -red phycocyanin -dominant -blue pigments
thylakoid
found in cytoplasm not associated site of light-dependent reactions of photosynthesis
heterocyst
specialized cell that fixes nitrogen
nitrogen fixation
take N2 (oxidized) out of the air and convert it to ammonia (NH3) or NH4+ (reduced) takes more energy to reduce nitrogen than carbon
gas vesicles
formed by bacteria to float in water columns
glycogen
BOOK
peptidoglycan
composition of the cell wall -in prokaryotes most complicated wall material we know of
slime sheath
around the cell wall contains colloids -pectin is the colloid
fission
divide by binary fission rather than mitosis asexual reproduction division into two cells
heterocysts
nitrogen-fixing cells