bcm 43

Question 1

what is anabaena

Answer 1

filamenthos cyanobacterium

Question 2

what are heterocysts

Answer 2

specilised thick pale cells formed in filamentos cyanobacterium during nitrogen strarvation

Question 3

what is anoxygenic photosynthesis

Answer 3

light captured - atp produced
without o2 production
h2o not used as e donor

Question 4

what organisms use anoxygenic photosynthesis

Answer 4

green sulfer bacteria
purple slfer bacteria
acidobacteria
photo helibacteria

Question 5

what is an example of purple sulfer bacteria

Answer 5

chromatiae

Question 6

what is the h source in chromatia

Answer 6

h2s or s^0 h2

inorganic acid

Question 7

what are chromatiaes classification

Answer 7

photolithoautotroph

Question 8

what do purple sulfer bacteria contain

Answer 8

yellow globules of sulpher ^0

Question 9

give an example of purple non sulfer bacteri

Answer 9

Rhodobacter sphaeroides

Question 10

what is the principle growth mode of purple sulfer bacteria

Answer 10

photolithoautotroph

Question 11

what is the principle growth mode of purple non sulfer bacteria

Answer 11

photoorganoheterotroph

Question 12

which purple bacteria can grow aerobically in the dark

Answer 12

purple non sulfer bacteria

Question 13

what is the major e donor in both purple bacteria

Answer 13

pns = organic acids
ps = h2s

Question 14

which purple bacteria accumulate sulfer in cell

Answer 14

purple sulfer bacteri

Question 15

Describe halobacterium

Answer 15

archea
obligate anaerobe
chemoorganoheterotroph
under low 02 purple patches on cm = bacteriahodopsin 
extreme halophiles

Question 16

what is bacteriorhodopsin

Answer 16

light driven proton pump
pruple patches = bacteriorhodosin
catches light energy and uses it to move protons across membrane out of cell