Why are some molecules called bioactive molecules ? Give two examples

1.	Why are some molecules called bioactive molecules ? Give two examples of such molecules.
Answer» These molecules which are biologically active are called bioactive molecules. Like antibiotics and vitamins are bioactive molecules.e.g., Citric acid - Aspergillus niger Ethanol Saccharomyces Cerevisiae.

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(i) Arrange the following compounds in an increasing order of basic strength : `C_(6)H_(5)NH_(2), C_(6)H_(5)N(CN_(3))_(2), (C_(2)H_(5))_(2)NH and CH_(3)NH_(2)` (ii) Arrange the following compounds in a decreasing order of `pK_(b)` values: `C_(2)H_(5)NH_(2), C_(6)H_(5)NHCH_(3), (C_(2)H_(5))_(2) NH and C_(6)H_(5)NH_(2)`
Rerrange the following in an increasing order of their basic strengths: `C_(6)H_(5)NH_(2),C_(6)H_(5)N(CH_(3))_(2),(C_(6)H_(5))_(2)` NH and `CH_(3)NH_(2)`.
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Why are some molecules called bioactive molecules ? Give two examples of such molecules.

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