pH-titration of amino acids and small peptides, and estimation of isoelectric point (pI)
1. Which of the following configurations is commonly seen in the case of the amino acids that form human proteins?
2. Amino acids Valine exist as ______ at neutral pH
3. Zwitterions are ______ at neutral pH.
4. The titration curve of glycine represents ______.
5. Which of the following amino acids exist as negatively charged ions at neutral pH?
6. Which of the following amino acids exist as positively charged ions at neutral pH?
7. Which of the following properties of a protein is least likely to be affected by changes in pH?
8. The dissociation constant of H2O at 25° C is ______.
9. The naming is commonly done in the following manner
10. Which of the following leads to the neutral charge of an amino acid?