The cellular process diffusion does not require cellular ______ to reach equilibrium. Similarly, uses a selectively permeable membrane to reach equilibrium. This Membrane allows _to pass through, but not soluble particles or molecules. It too does Not require cellular energy. When molecules cannot move through a cell membrane passively, the Cell uses a process called_. This process uses_________ found in the cells Membrane to pass particles and reach equilibrium.

In a solution, particles move constantly. They collide with one another and tend to spread out randomly. As a result, the particles tend to move from an area where they are more concentrated to an area where they are less concentrated, a process known as diffusion (dih-FYOO-zhun). When the concentration of the solute is the same throughout a system, the system has reached equilibrium.

What do diffusion and equilibrium have to do with cell membranes? Suppose a substance is present in unequal concentrations on either side of a cell membrane, as shown in the figure at right. If the substance can cross the cell membrane, its particles will tend to move toward the area where it is less concentrated until equilibrium is reached. At that point, the concentration of the substance on both sides of the cell membrane will be the same.

Because diffusion depends upon random particle movements, substances diffuse across membranes without requiring the cell to use energy. Even when equilibrium is reached, particles of a solution will continue to move across the membrane in both directions. However, because almost equal numbers of particles move in each direction, there is no further change in concentration.

Histrionicus Histrionicus · Answer 2 · 2021-09-29T10:29:07+02:00

The fill in the blanks are -

The cellular process diffusion does not require cellular ENERGY to reach equilibrium.
Similarly, OSMOSIS uses a selectively permeable membrane to reach equilibrium.
This Membrane allows SOLVENT/WATER to pass through, but not soluble particles or molecules.
It too does Not require cellular energy. When molecules cannot move through a cell membrane passively, the Cell uses a process called ACTIVE TRANSPORT.
This process uses INTEGRAL PROTEIN found in the cells Membrane to pass particles and reach equilibrium.

Passive transport is the movement of substances from their high concentration area to low concentration area.

It does not require any type of cellular energy for the movement of the substance.
Diffusion and osmosis are examples of passive transport, however, in osmosis, there is a semi-permeable membrane that allows only specific types of molecules to cross.

Active transport is the movement of the substances against the concentration gradient which means from low concentration area to high concentration area.

It requires cellular energy as it needs to transport substances against the concentration gradient.
through integral protein in cell membranes acts as a channel or pump.

Thus, fillers are -

ENERGY
OSMOSIS
SOLVENT/WATER
ACTIVE TRANSPORT.
INTEGRAL PROTEIN

Learn more about integral protein:

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