Dissimilatory metal reduction microorganisms (DMRM) harvest en er gy by a novel metabolism pathway, coupling anaerobic oxidation of organic substa nces to the reduction of metal oxides.
However, in bacteria the plasma membrane has other important roles such as respiration, photosynthesis, and the synthesis of lipids and cell wall components.
Bananas ripen more quickly than most fruit because they don't naturally slow the respiration after being picked, in fact it speeds up, causing bananas to become mushy.