Question

1. what are the 2 types of active transport and provide some details of each:

Explanation:

Active transport is a process that moves substances against their concentration gradient, requiring energy. The two main types are primary active transport and secondary active transport.

• Primary active transport: Directly uses energy (usually ATP) to move molecules. For example, the sodium - potassium pump. It uses ATP to pump sodium ions out of the cell and potassium ions into the cell, maintaining concentration gradients.
• Secondary active transport: Relies on the electrochemical gradient established by primary active transport. For instance, in the proximal convoluted tubule of the kidney, the reabsorption of glucose is coupled with the movement of sodium ions. The sodium - glucose symporter uses the energy from the sodium gradient (established by the sodium - potassium pump, a primary active transport mechanism) to move glucose into the cell.

Answer:

The two types of active transport are primary active transport (e.g., sodium - potassium pump using ATP) and secondary active transport (e.g., sodium - glucose symporter using the sodium gradient).