NEET · Biology · STD 11 - 9. Biomolecules

A typical fat molecule is made up of

A one glycerol and one fatty acid molecule
B three glycerol and three fatty acid molecules
C three glycerol molecules and one fatty acid molecule
D one glycerol and three fatty acid molecules.

Verified Solution

Answer & Solution

Correct Answer

(D) one glycerol and three fatty acid molecules.

Step-by-step Solution

Detailed explanation

(d) : Neutral or true fats are triglycerides which are formed by esterification of three molecules of fatty acids with one molecule of trihydric alcohol, glycerol (glycerine or trihydroxy propane).

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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