Which enzyme is responsible for breaking peptide bonds in proteins?
Proteases (also called peptidases) break peptide bonds in proteins.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Enzymes - Properties Classification and Cofactors
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The digestion of proteins by lysosomes is dependent on:
Low pH and hydrolytic enzymes is the scientifically accurate answer to this question. Within the study of Protein Degradation, this concept is well-established through extensive research and is documented in standard scientific literature. The specific properties, mechanisms, or characteristics of Low pH and hydrolytic enzymes directly address what is being asked. Among the other options, ATP hydrolysis, High temperature, and Ubiquitination do not correctly answer this question because they either refer to different concepts, describe properties of other molecules or processes, or represent co
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 4
Which enzyme is used to selectively cleave peptide bonds at the C-terminal of aromatic residues?
Chymotrypsin is the accurate response regarding enzymatic activity or regulation described in this question. Enzymes are biological catalysts that accelerate reactions by lowering activation energy through specific substrate binding and transition state stabilization. In the context of Protein Degradation, Chymotrypsin plays a specific catalytic or regulatory role determined by its active site configuration and mechanism of action. The other options (Trypsin, Elastase, and Carboxypeptidase A) are either different enzymes with distinct substrate specificities, act through different mechanisms,
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 4
