Question

Which of the following are correct.

a) Neural coordination is fast but short-lived.

b) Secretions of the ductless gland are messengers.

c) Hormones are non-nutrient chemicals.

d) Hormones act as intracellular messengers.

e) Chemical messengers produced in large amounts.

• A. a, b, and d
• B. b, c, and d
• C. a, b, and c
• D. a, b, c, and d

Answer 1

Answer: (C)

a, b, and c

$\Rightarrow$ Properties of Hormones

$\bullet$ Hormones are non-nutrient chemicals which act as intercellular messengers and are produced in trace amount.

$\bullet$ Hormones do not provide energy or building materials but they do have effects on growth differentiation.

$\bullet$ They may accelerate or inhibit a specific physiological process.

$\bullet$ Hormones are often used up in their regulatory action.