This picture shows students working in a
chemistry laboratory. What could they do to make
their lab safer?
1.Label the test tubes and plastic cups.
2.Move the fire extinguisher closer to their
table
3.Wear chemical protective gloves
4. Reduce the clutter on the table.
5. Stand at the table instead of sitting
Tie long hair back

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.