Why Are the Amino Acids in Proteins Connected by Means

question 29

Multiple Choice

Why are the amino acids in proteins connected by means of amide and not ester bonds?
(I) Amides are more stable than esters.
(II) Esters are more stable than amides.
(III) Amides can be easily transformed into carboxylic acids and amines.
(IV) Amides are resistant to hydrolysis in the absence of enzymes.

• A) I, III
• B) I, II
• C) I, IV
• D) II, III

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