<p>Give reasons for any 3 of the following observations:</p>

<p>(a) Penta-acetate of glucose does not react with hydroxylamine.</p>

<p>(b) Amino acids behave like salts</p>

<p>(c) Water soluble vitamins must be taken regularly in died.</p>

<p>(d) The two strands in DNA are complimentary to each other.</p>