From which of the following are amino acids primarily synthesized?

$A$: Dextrins are intermediate polysaccharides formed during the hydrolysis of starch into sugar.
$R$: Ascorbic acid is a sugar derivative.

Which of the following is incorrect?

The smallest particle of water is

Which of the following types of water is found in the highest amount in the protoplasm?

The energy released by one molecule of $ATP$ is approximately: (in $kcal$)