The incorrect statement regarding hormones is:
Correct answer: B. Initiate biochemical reaction
- A. Endocrine secretion
- B. Initiate biochemical reaction
- C. Organic in nature
- D. Transported by blood
Explanation
Option B is correct.No, hormones do not initiate biochemical reactions. Hormones are chemical messengers that are produced by glands and transported through the bloodstream to target cells. Once they reach their target cells, hormones bind to receptors on the cell surface and trigger a cascade of biochemical reactions inside the cell. Hormones can either stimulate or inhibit biochemical reactions. For example, the hormone insulin stimulates the uptake of glucose from the bloodstream into cells. The hormone glucagon, on the other hand, inhibits the uptake of glucose from the bloodstream into cells.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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