Answer:
Dietary fiber refers to a group of substances in plant foods which cannot be completely broken down by human digestive enzymes. This includes waxes, lignin and polysaccharides such as cellulose and pectin. Originally it was thought that dietary fiber was completely indigestible and did not provide any energy.
Explanation:
The nucleolus<span> makes ribosomal subunits from proteins and ribosomal RNA, also known as rRNA. </span>