Nick is conducting a controlled experiment to test whether music daisies grow faster. below are the steps to nick's experiment: 1. plant daisies in two separate flowerpots. 2. place flowerpot 1 in a green room with music. 3. place flowerpot 2 in a similar green room without music. 4. give the daisies the same amount of food and water each week. 5. measure the growth of the daisies. 6. draw conclusions based on the data collected. which group is the control group in nick's experiment?

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.