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?
A. Facilitated diffusion
B. Simple diffusion
C. Osmosis
D. Active transport

Answer 1

Answer:

The correct answer is (d) Active transport.

Explanation:

Active transport is a process of absorption of atoms or molecules against the concentration gradient in the cells. In order to do this, cells need to produce special kinds of transporters, called molecular pumps that facilitate the absorption of the atoms/molecules. Energy from ATP is used for this process.

In contrast, during the process of osmosis the molecules/atoms move with the concentration gradient and require no energy to do so and in diffusion also no energy is required.

Hope it helps..!!

Answer 2

Answer:

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?

A. Facilitated diffusion

B. Simple diffusion

C. Osmosis

D. Active transport✔️✔️✔️