Answer:
primary active transport
Explanation:
Active transport requires energy as they transport molecules against the concentration gradient. According to source of the energy used, active transport is divided into two types which are the primary active transport and the secondary active transport.
The energy is derived directly from breakdown of the ATP molecules in primary active transport. The energy is derived secondarily in the secondary active transport.
Hence, sodium-potassium pump is activated by the ATP. This activation allows pump to transport the sodium and the potassium ions against the gradient.
