Question

what are hormones? list four characteristics of hormone

Answer 1

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Hormones are the chemical substances which co-ordinate and control the activities of living organisms and also their growth. Characterics of hormones are :

 (i) They are chemical messengers

 (ii) Regulate behaviour of target cells.

 (iii) To stimulate the target organs.

 (iv) They are proteinaceous or non-proteinaceous in nature. 

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Answer 2

●Hormones are secreted by endocrine cells. ●Hormones are chemical messengers. ●The hormones regulate the behaviour of the target cells. ●Hormones,unlike enzyms do not catalyze any reaction.