Question

list and describe all types of active transport found within cells. how are these processes different from passive transport?

Answer 1

Active transport is the transport of ions or nutrient against a conc. Gradient. For secondry transport energy is required for transport. Active transport is through the membrane proteins or channels mainly. Active transport is of two types mainly -

1. Primary active transport - In this type of primary transport directly energy is required for transport of ions or nutrient. Example of primary transport is NaK ATPase pump.

2. Secondry active transport - Uses electrochemical gradient generated by energy consumption to transport the ions or nutrient through the cell membrane. Example is Co transport pathways uses secondary active transport.

Passive transport is movement of material across the cell membrane thorough the use of conc. Gradient and doesnot require energy for transport. e. g. Diffusion, Osmosis.