Introns are regions that do not code for proteins, and prokaryotes lack introns, whereas eukaryotes contain introns. Given these facts, prokaryotes lack regions that do not code for proteins, while this type of living being has them: among the following options:
- bioaerosols
 - layers of fat
 - orchids
 - animals
 - critical organs
 - sensory neurons
 - eukaryotes
 - it needs them


 

       eukaryotes  