Question

What specialized intracellular components would increase the fitness of prokaryotes dwelling in these particular microenvironments? Name at least one for each example.

a. Aerophilic magnetic bacteria in aquatic sediments

b. Nonphotosynthetic ocean-dwelling archaea utilizing light as an energy source

c. Gut-inhabiting enterobacteria

d. Photosynthetic cyanobacteria in damp soil