if-the-pka-of-an-amino-acids-r-group-is-40-what-is-the-likely-charge-of-the-r-gr

Question

If the pKa of an amino acid's R group is 4.0, what is the likely charge of the R group at pH 7?

Accepted Answer

Negatively charged

Answer

Cannot be determined

Answer

Positively charged

Answer

Uncharged