The isoelectric point is the:
A) Ability of an amino acid to carry a positive or negative charge
B) pH at which proteins are least soluble and most easily precipitated
C) pH at which proteins are most soluble and combine easily in foods
D) Point at which cross linkages are the strongest
E) Structure of a protein where the polar chains fold to the outside and the non-polar chains fold to the inside

Question

Quizplus · Accepted Answer

The isoelectric point refers to the pH at which a molecule, such as an amino acid or protein, carries no net electric charge. At this pH, proteins are typically least soluble in water and can precipitate out of solution, which is why option B is correct.

The Isoelectric Point Is The