Question

The process involves the movement of substances against the concentration gradient using ATP.

Answer 1

Active transport:

1. The process involves the movement of substances against the concentration gradient using ATP as active transport.
2. The process of moving substances against a concentration gradient using ATP is known as active transport.
3. A protein pump uses stored energy in the form of ATP to move molecules during the active transport process.
4. Active transport is of two types such as primary active transport and secondary active transport.
5. In primary active transport, the energy is released during the breakdown of adenosine triphosphate.
6. It is used to transport molecules across the membrane against a concentration gradient.
7. Primary active transport employs external chemical energy such as ATP.
8. In secondary active transport, substances move across the membrane with help of electrochemical energy.
9. Example: Phagocytosis by macrophages.