Under certain circumstances, potassium ions ( K+K+ ) in a cell will move across the cell membrane from the inside to the outside. The potential inside the cell is −70.5 mV−70.5 mV and the potential outside the cell is zero. What is the change in the electrical potential energy of a single potassium ion as it moves across the membrane?

the change in the electrical potential energy of a single potassium ion as it moves across the membrane is 1.12941 × 10⁻²⁰  J

Explanation:

The formula used in determining the change in the electrical potential energy can be expressed by the relation.

Charge in electrical Potential energy =

where q = the potassium ion

q =  18 electrons and 19 protons

q = 19-18 = 1 electron  

1 electron = 1.602 × 10⁻¹⁹ Coulombs

Thus;

the  potential inside the cell is −70.5 mV

= -70.5 × 10⁻³ V

∴ Charge in electrical Potential energy =

Charge in electrical Potential energy =

Charge in electrical Potential energy  = 1.12941 × 10⁻²⁰  J

Thus; the change in the electrical potential energy of a single potassium ion as it moves across the membrane is 1.12941 × 10⁻²⁰  J

videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.

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