When looking at the genome of an uncultured microbe, the discovery of a(n) -encoding gene provides evidence that the microbe can grow in the presence of oxygen. Multiple Choice reductase catalase dehydrogenase ABC-type transporter

Are you asking about a street map usage  if so here is your answer  a street map for a very limited area could simply be a bit map or a .jpg image.  but a more general map would probably store the streets as vectors.  but you shouldn't assume that there is one way to do it