A calcium pump is a type of protein found in the cell membrane that uses energy to move calcium ions out of the cell against their concentration gradient.
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ATPase: This is an enzyme that provides energy for the transport process by hydrolyzing ATP (adenosine triphosphate).
Ion Gradient: This refers to a difference in ion concentration across a plasma membrane.
Active Transport: This is the movement of molecules across a cell membrane from an area of lower concentration to one of higher concentration, assisted by enzymes and requiring energy.