4. In 2005, a new species of green sulfur bacteria was discovered near a geothermal vent at the bottom of the ocean. An exceptionally efficient light-harvesting mechanism allows these bacteria
to carry out photosynthesis where the only illumination is a dim volcanic glow emanating from
the vent. Cell membranes are required for electron transfer chains in the light-dependent
reactions, but these bacteria have no internal membranes. How do you think they carry out the
light-dependent reactions? |