write a narrative in passive form for these steps "For each sample, add 30 L of each sample to the appropriate well in the gel. This volume is larger than used before so pipette slowly being sure to stop and hold the pipette at the first stop before removing the tip from the well. Change tips between samples. 10.Place the top on the gel box and plug the electrodes into the top of the box. Match the electrode with the plug to ensure that the proper current has been placed (the black plug with the black electrode and the red plug with the red electrode). 11.Plug the electrodes into the power source. Run at 125V for 20 to 30 minutes. 12.Remove the gel and visualize. The pattern should be similar to that seen in the Figure 2 below