phototrophs convert to chemotrophs when light is absent?

About microscopic forms of life, including Bacteria, Archea, protozoans, algae and fungi. Topics relating to viruses, viroids and prions also belong here.

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phototrophs convert to chemotrophs when light is absent?

Post by klapausius » Thu Oct 14, 2010 3:46 am

The purple non-sulfer bacteria
A.Grow anaerobically as photoorganoheterotrophs
B.utilize organic molecules as a source of electrons for photosynthesis
C.typically can grow aerobically in the dark as chemoorganoheterotrophs
D.all of the above

my choice is D. i am quite sure A and B is true. this would means that C is truesince i cant choose A and B
therefore i would like to clarify this idea; can MOST phototrophs convert to chemotrophs when light source is absent?

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Inland Taipan
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Post by JackBean » Thu Oct 14, 2010 7:23 am

sure, what should they do otherwise? Die? They wouldn't survive the nigth...

however, there is the word aerobically...

BTW I believe, A is NOT true ;)

Cis or trans? That's what matters.

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