50 POINTS!! ILL GIVE BRAINLIEST TO WHOEVER HELPS/ EXPLAINS THEIR ANSWER im not sure if this is correct, but i think the answer is nucleus. pls help :))

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

Drag each tile to the correct box. arrange the layers and faults from oldest to youngest.

Why do some dna fragments move farther than others during gel electrophoresis? a. because their shapes are different b. because they are different types of molecules c. because the samples are different colors d. because their masses are different