In some viruses, RNA contains the genetic information. RNA is of three types, they are tRNA (transfer RNA), mRNA (messenger RNA) and rRNA (ribosomal<span> RNA). Messenger RNA, as the name suggests acts a messenger. It carries genetic information sequences between </span>DNA<span> and ribosomes, and it also directs protein synthesis.
Absorption is a process that takes place in the small intestines or ileum of the GI tract, in which simple and soluble nutrients are absorbed into the blood stream.
Absorption is enhanced by several adaptations of the gut such as large surface area of the gut which directly facilitates absorption of nutrients.
Presence of villi and microvilli in the gut increases the surface area for absorption of nutrients in the ileum.
