Which statement is true about nitrogen and oxygen
a. neither contains subatomic particles
b. they are both made of portions, neutrons, and electrons
c. they are both used to make water molecules
d. they make up about 99.9% of the human body

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:

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?