Question

In kidney cells, charged ions like sodium and chloride are reabsorbed from the urine against a concentration gradient. Which mode of cellular transport is employed here?
Facilitated diffusion
Simple diffusion
Osmosis
Active transport

Answer 1

@douglaswinslowcooper

Answer 2

@stonewoods

Answer 3

i think its activetransport because of this..... Active transport
Active transport is the movement of all types of molecules across a cell membrane. The movement of these molecules occurs against their concentration gradient, going from a low to high concentration. Wikipedia

Answer 4

ok