Chemical Coordination and Regulation Question 4
4. Which of the following is an amino acid derived hormone?
[2018]
(a) Epinephrine
(b) Ecdysone
(c) Estriol
(d) Estradiol
Show Answer
Answer : a
Hints & Solutions
(a) Epinephrine is derived from tyrosine by the removal of carboxyl group. It is a catecholamine. Epinephrine and norepinephrine are very similar neurotransmitters and hormones. While epinephrine has slightly more of an effect on your heart, norepinephrine has more of an effect on your blood vessels. Both play a role in your body’s natural fight-or-flight response to stress and have important medical uses as well.
