A hormone 1 passes directly into the bloodstream 2 is catalystic in nature 3 is manufactured in the ...........

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A hormone

1. passes directly into the bloodstream

2. is catalystic in nature

3. is manufactured in the endocrine glands

4. is always a protein

Which of the following is/are correct?

1 and 3 are true

1, 2 and 3 are true

None is true

All are true

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Explanation:

4th statement is incorrect i.e. a hormone is always a protein.
A hormone is any member of a class of signaling molecules produced by glands in multicellular organisms that are transported by the circulatory system to target distant organs to regulate physiology and behaviour.