Which of the following combinations of bonds can be broken during the breakdown of a protein that a person has eaten? A - VCE - SSCE Chemistry - Question 29 - 2020 - Paper 1

During protein breakdown, various bonds can be broken, with both covalent and hydrogen bonds playing significant roles.

1. Covalent Bonds: These bonds are typically strong and help to stabilize protein structures. However, during the breakdown process, especially in complex tertiary structures, some covalent bonds can be broken, leading to the unraveling of the protein.

2. Hydrogen Bonds: These are generally weaker than covalent bonds and provide secondary stability to protein structures. Hydrogen bonds in the secondary structure can be disrupted more easily during the denaturation process, allowing the protein to unfold and separate.

Considering these aspects, the correct option is B, as it identifies the breaking of covalent bonds in the tertiary structure along with hydrogen bonds in the secondary structure.