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The picture shows the active transport of ions by the sodium-potassium pump.

How is diffusion different from this process?
A) Diffusion takes place due to osmotic pressure.
B) Diffusion requires cellular energy for the transfer of molecules.
C) Diffusion requires protein channels as a passage-way for particles.
D) Diffusion transfers particles from an area of high to low concentration.

The picture shows the active transport of ions by the sodiumpotassium pump How is diffusion different from this process A Diffusion takes place due to osmotic class=

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JasonZhu
D. The process shown is a form of active transport, since it requires energy to pump ions against their concentration gradient. Diffusion is the opposite: passive transfer of particles from area of high to low concentration.

Answer: Option D

Explanation: The active transport needs energy for the transport of the biological molecules across membranes.

It also allows the movement of certain ions such as sodium, potassium, calcium et cetera to pass across the membrane( against the concentration gradient).

Diffusion does not needs external energy for the transport of the material from one place ( higher concentration) to another place ( lower concentration).

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