Amide

... is simply a large peptide, and can also be called a polypeptide. The building blocks of peptides and proteins are amino acids, which are linked by amide (peptide) bonds. The RNA can be converted back to DNA by retroviruses (RNA viruses) such as HIV with the use of reverse transcriptase enzyme. ...

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Looks good to me. You only need to consider the terminal NH2 and COOH groups, as you've done. All the others are forming amide bonds with the next amino acid in the polypeptide and don't substantially contribute to the pH equilibria. The only other titratable groups are on the side ...

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I think that the answers is written thare. It's all because protein has a amide group and amino acid has a carboxyl roup. Both of these groups contain carbonyl arrangements which is said to be stable to oxidation stress. Meanwhile, lipids (e.g. fatty acids) are ...

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... not denaturation. I still don't know how to break peptide bonds, but I'll search for it. My prediction is with strong bases because peptide (amide) bonds tends to be acidic.

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... try some acid chromate cleaning solution. Qiagen sells a kit for recovery of nucleic acids from gel fragments that actually dissolves the acrylamide. It’s designed for fairly small volumes of acrylamide, though. I always thought the active ingredient was a chaotropic salt like LiSO4 or LiCl, ...

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