(a) How are hormones and vitamins different in respect of their source and functions ? (3 marks)
(b) Give one example each of
(i) Globular protein (ii) Fibrous protein
(a) Hormones are synthesized in our body and help in regulation of our body systems while
vitamins are synthesized artificially in the laboratory or obtained from the food which helps in
controlling many diseases.
(b) (i) Globular protein : All enzymes and hormones like insulin.
(ii) Fibrous protein : Keratin in skin, nails etc.