COMEDK · Chemistry · 30. Biomolecules

Choose the incorrect statement.

A Denaturation of protein is due to loss of both the secondary and tertiary structures of the protein.
B The hormone Glucocorticoid controls the level of excretion of water and salts by the kidney.
C Vitamins A and K are fat soluble and are stored in the liver of human beings.
D Complete hydrolysis of RNA gives Nitrogen containing bases, a pentose sugar and phosphoric acid.

Verified Solution

Answer & Solution

Correct Answer

(B) The hormone Glucocorticoid controls the level of excretion of water and salts by the kidney.

Step-by-step Solution

Detailed explanation

Denaturation of proteins involves the loss of secondary and tertiary structures due to physical or chemical changes, while the primary structure remains intact. Thus, the statement regarding denaturation is correct. Vitamins A, D, E, and K are fat-soluble vitamins and are stored…

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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