During the process molecule such as glucose must use a protein channel to cross through a cell membrane.

i think the answer is gold im not entirely sure

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation:

i think the answer is 95 hope this