JEE CHEMISTRY MCQ: BIOMOLECULES

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Which of the following reactions could not be explained on the basis of open chain structure of glucose?

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Correct option: A

Pentaacetate of glucose does not react with

{NH}_2 {OH}

Option A is correct. The fact that pentaacetate of glucose does not react with NH2OH indicates the absence of a free -CHO group, which contradicts the open-chain structure of glucose.

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Which one of the following compounds is different from the rest in terms of undergoing hydrolysis to form simpler compounds? Which of the following enzymes, converts glucose to alcohol? The one which has least iodine value is Identify the essential amino acids from below:

(A) Valine
(B) Proline

(C) Lysine
(D) Threonine

(E) Tyrosine

Choose the correct answer from the options given
below: Which of the following statements is true about a peptide bond (RCONHR)? Peptide and hydrogen bonds are present in the Primary structure of protein is due to