When analyzing the results of a lab report, Dr. Watkins realizes the cells of her patient are producing high levels of proteins.
Therefore, she predicts the cells have a large number of:
Mitochondria
Phospholipids
Gogli Bodies
Ribosomes

Ais the answer for you

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