Acompany is creating an advertisement for colored contact lenses. the company wants to include the phrase “each contact lens is like a second ” in the ad. which parts of the eye would be most accurate in completing the phrase? check all that apply. retina sclera iris pupil cornea vitreous humor

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.