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B
Basics
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C
Acids
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D
None of the above
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Solution
The correct option is A Impetus
A hormone is derived from Greek"impetus" which is a chemical released by a cell or a gland in one part of the body that sends out messages that affect cells in other parts of the organism.
Hormones in animals are often transported in the blood.
Cells respond to a hormone when they express a specific receptor for that hormone. Hence, Hormones are also known as Impetus.