Why is the ability to move important to animals? A. Helps them find food . B. It helps them stay warm. C. It helps them obtain oxygen. And D. It helps them differentiate cells

Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton