Question

What is the combination of an electrical gradient and a concentration gradient called?

a) Active transport
b) Facilitated diffusion
c) Secondary active transport
d) Osmotic pressure

Answer 1

Secondary active transport is the combination of an electrical gradient and a concentration gradient. It occurs when energy from primary transport is used to move another substance into the cell.

Step-by-step explanation:

The combination of an electrical gradient and a concentration gradient is called secondary active transport. Secondary active transport is the movement of material using the energy of the electrochemical gradient established by primary active transport. It occurs when energy from primary transport is used to move another substance into the cell and up its concentration gradient.