ATP is very important. It transports the energy necessary for all cellular metabolic activities in living things.
Answer:
Pump Ca+ into the cell.
Explanation:
The pumps are used for the transportation of substances against the concentration gradient. These pumps require energy for the transportation of molecules against the concentration gradient.
The most common pump used for the transportation of calcium ions is the calcium pump. These pumps require ATPase activity and transfer calcium against the concentration gradient. The calcium ions are pumped outside of the cell and not cell inside.
Thus, the correct answer is option (b).
