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Proteins perform many physiological functions. For example, some functions as enzymes. Which 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

Answers (1)

Proteins can sometimes function as hormones, i.e., peptide hormones such as insulin, growth hormones etc. Antibiotics that have enzymes present do not possess any protein, but a lot of antibodies might not have protein or enzymes. Moreover, pigments are not proteins. Hence, Option (d) is the correct option. 

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