The statement “only proteins are formed from amino acids joined together by peptide bonds” correctly identifies a difference in the structure of proteins and polysaccharides.
Polysaccharide is a carbohydrate (e.g., starch, cellulose, or glycogen) whose molecules consist of a number of sugar molecules bonded together.
Proteins are large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues.
The correct answer between all the choices given is the second choice or letter B. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.
