All proteins yield ___________ upon complete hydrolysis?
Correct answer: B. Amino acids
- A. Nitrogen
- B. Amino acids
- C. Carbon and hydrogen
- D. Sulphur
Explanation
Complete hydrolysis breaks peptide bonds by reaction with water and converts a protein into its constituent amino acids. Nitrogen, carbon, hydrogen and sometimes sulfur are elements present in proteins, not the direct products of hydrolysis. The likely mistake is choosing nitrogen because proteins contain nitrogenous amino groups.
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About Classification of Proteins
Proteins are classified by composition as simple, conjugated and derived proteins, and by shape as fibrous or globular proteins. The topic relates these classes to examples such as albumin, keratin, collagen, haemoglobin and casein, while distinguishing structural proteins from proteins with transport, catalytic or regulatory roles.
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