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Question

Which of the following statements is not correct for the hormones?
  1. They act on target organs away from the source glands.
  2. They are used like catalysts.
  3. They are secreted directly into the blood.
  4. They are produced in very minute quantities and are biologically very active.


Solution

The correct option is B They are used like catalysts.
Hormones are not used as catalysts. Enzymes are used as catalysts to fasten the rate of chemical reactions.
Hormones are secreted by endocrine glands directly into the blood to act on their target organ away from the source endocrine gland. They are released in trace amounts and are metabolically active.
 

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