Q:

Which statement below about hormones is true

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Which statement below about hormones is true?


  1. Hormones are enzymes that catalyse reactions
  2. Hormones are released into the blood circulation
  3. Hormones affect all cells of the body
  4. Hormones are released by neurones at synapses

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 B: Hormones are circulating messengers that are transported in blood. A particular hormone does not necessarily affect every cell in the body. Some (but not all) hormones are released by neurones, for example in the hypothalamus.  

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