What describes a value for density
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ah I remember learning this... So in the cell membrane their are entrances called pumps that force ions (positively charged molecules) to move from low concentration to high concentration. During active transport, which is the process i just described, the sodium potassium pumps job is to move sodium ions ( Na+ ) ions out of the cell and move potassium ions (K+) into the cell.
1. three sodium ions are positioned in the carrier protein.
2. Atp molecule is split that create energy that bonds to the carrier.
3. the pump changes shape and opens up to the outside of the membrane, giving the potassium ions (K+) a chance to come inside. So two potassium ions fit inside and they enter the cell.
4. When the potassium goes inside, the phosphate molecule is released ( What split from the ATP molecule earlier)
