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  • Movement and accumulation of ions across a membrane against their concentration gradient can be explained byOption: 1 Osmosis<div class

Movement and accumulation of ions across a membrane against their concentration gradient can be explained by

Option: 1

Osmosis


Option: 2

Facilitated Diffusion


Option: 3

Passive Transport


Option: 4

Active Transport


Answers (1)

best_answer

The correct option is Option 4) Active Transport.

Active transport is the process by which ions or molecules are moved across a membrane against their concentration gradient, from an area of lower concentration to an area of higher concentration. This process requires the expenditure of energy in the form of ATP (adenosine triphosphate).

During active transport, specialized transport proteins, such as pumps or carriers, are involved in the movement of ions or molecules across the membrane. These transport proteins actively move the ions or molecules, using ATP as an energy source, to create a concentration gradient that is different from the equilibrium state.

This process is in contrast to passive transport, such as osmosis or facilitated diffusion, where the movement of ions or molecules occurs along the concentration gradient and does not require energy expenditure.

Therefore, Option 4) Active Transport is the correct explanation for the movement and accumulation of ions across a membrane against their concentration gradient.

Posted by

jitender.kumar

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