Select proper terms from the table to fill in the blanks. charge size polyacrylamide electrical anode stacking gel resolving gel larger protein expression same slower lower Isoelectric point Sephadex denatured cathode protein structure smaller In a biochemistry lab, SDS-PAGE is often used to check the In an field, the denatured protein molecules move toward the at different rates depending on their A typical SDS-PAGE gel has two parts that differ in the percentage of . The top part of a SDS-PAGE gel is called the , where protein molecules are focused to have an even starting point as they enter the bottom part of the gel called . Protein molecules of different sizes are separated because proteins of molecular weight move than proteins of molecular weight