Q.

Which of the following statements are true for catecholamines?
(a) They are steroid hormones.
(b) They generate second messengers in target cells.
(c) They are hormones of fight or flight.
(d) They decrease heart beat and the rate of respiration.

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a

(a) and (c)

b

(a) and (b)

c

(c) and (d)

d

(b) and (c)

answer is B.

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Detailed Solution

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Catecholamines:
(a) They are amino acid derivatives.
(b) They generate second messengers in target cells.
(c) They are hormones of fight or flight.
(d) They increase heart beat and the rate of respiration.

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Which of the following statements are true for catecholamines?(a) They are steroid hormones.(b) They generate second messengers in target cells.(c) They are hormones of fight or flight.(d) They decrease heart beat and the rate of respiration.