It has to be in living organisms, it has to have a plasma membrane and it has to arise from a previously existing cell.
The correct answer is Nematodes, also known as roundworms. They fit the description that you provided.
Answer:
The viral genome is covered by a nucleocapsid protein called N. Two other proteins in the virus are the large protein called L, and the phosphoprotein called P. Both of these are involved with making new copies of the measles virus.
Explanation:
I got this from the wikipedia
