question_answer 25)

  Proteins perform many physiological functions. For example, some functions as enzymes. One of the following represents an additional function that some proteins discharge (a) Antibiotics                                                                    (b) Pigment conferring colour to skin (c) Pigments making colours of flowers                  (d) Hormones

Answer:

                  (d) Proteins can sometimes function as hormones, i.e., peptide hormones such as insulin,growth hormone etc. Other compounds such as antibiotics, florigen and melanin are non-proteineceous in nature.