Question

Give one word for the following.3.Movement of molecules across semipermeable membrane against concentration gradient.​

Answer 1

Answer:

Diffusion is a passive process of transport. A single substance tends to move from an area of high concentration to an area of low concentration until the concentration is equal across a space. You are familiar with diffusion of substances through the air. For example, think about someone opening a bottle of ammonia in a room filled with people. The ammonia gas is at its highest concentration in the bottle; its lowest concentration is at the edges of the room. The ammonia vapor will diffuse, or spread away, from the bottle; gradually, more and more people will smell the ammonia as it spreads. Materials move within the cell ‘s cytosol by diffusion, and certain materials move through the plasma membrane by diffusion. Diffusion expends no energy. On the contrary, concentration gradients are a form of potential energy, dissipated as the gradient is eliminated.

Answer 2

Explanation:

In diffusion, the ions or molecules randomly diffuses the semipermeable membrane along the concentration gradient. Osmosis is the process of diffusion of molecules from the region of higher concentration to the lower concentration through a semipermeable membrane.

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