Answer:
is there an image so we can see which part you are talking about?
It’s a plus-plus, also known as mutualistic relationship. Our intestines provide a habitat for the good bacteria and in return the bacteria fend off bad bacteria from harming us.
The answer is option B "ovalbuminc." Ovalbuminc does not contain a structural protein. A structural protein are fibrous proteins which help form the protective layering on skin, fur, nails, claws, feathers, etc.. Ovalbuminc are proteins that are found in egg whites which do not consist of a structural protein.
Hope this helps.
