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As the pH of a solution increases, deprotonation of the acidic and basic groups on proteins occur,
so that carboxyl groups are converted to carboxylate anions (R-COOH to R-COO-) and ammonium groups are converted to amino groups (R-NH3+<span> to R-NH</span>2<span>).
In proteins the iso-electric point (pI) is defined as the pH at which a protein has no net charge.
When the pH > pI, a protein has a net negative charge and when the pH < pI, a protein has a net positive charge.
The pI varies for different proteins.</span>
The answer is going to be B
Answer:
fossils depict how our bones have changed from past year to today.
Explanation:
for example, wisdom teeth were use to eat raw meat and crush bones as shown in fossils like Lucy. Another example would be extinct animals preserved, they were not able to survive and adapt to the earths changing conditions.