Which of the following correctly identifies the bonds that break in a protein when it undergoes denaturation and when it undergoes hydrolysis?
Denaturation Hydrolysis
A - VCE - SSCE Chemistry - Question 6 - 2021 - Paper 1
Question 6
Which of the following correctly identifies the bonds that break in a protein when it undergoes denaturation and when it undergoes hydrolysis?
Denaturation Hydroly... show full transcript
Worked Solution & Example Answer:Which of the following correctly identifies the bonds that break in a protein when it undergoes denaturation and when it undergoes hydrolysis?
Denaturation Hydrolysis
A - VCE - SSCE Chemistry - Question 6 - 2021 - Paper 1
Step 1
Denaturation
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Answer
During denaturation, the tertiary and quaternary structures of proteins are disrupted. This process primarily involves the breaking of non-covalent interactions, such as hydrogen bonds and ionic bonds, but covalent bonds like disulfide bridges generally remain intact. Therefore, selection of 'hydrogen and ionic' bonds is appropriate.
Step 2
Hydrolysis
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Answer
In hydrolysis, the peptide bonds (which are a type of covalent bond) in the protein backbone are broken. Hence, the correct identification for hydrolysis would involve covalent bonds being cleaved. 'Covalent' is the proper descriptor for bonds broken during hydrolysis.
Step 3
Final Answer
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Answer
In conclusion, the correct match for the bonds that break during these processes is option D: 'hydrogen and ionic' for denaturation, and 'covalent' for hydrolysis.
