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What is an example of a selectively permeable?
A selectively permeable cell membrane allows certain molecules or ions to pass through it by means of active or passive transport. The most common example is the phospholipid bilayer cell membrane that surrounds all of our body cells. The inner membranes of an egg are also selectively permeable membranes.
What does the term selectively permable mean?
"Selectively permeable" refers to a membrane that allows certain substances to pass through while blocking others. This selectivity is based on the size, charge, or other properties of the molecules trying to cross the membrane. An example is a cell membrane, which permits the passage of specific molecules necessary for the cell's function while blocking others.
What is responsible for selectively transporting substances into the ventricles from the bloodstream?
The choroid plexus is responsible for selectively transporting substances into the ventricles from the bloodstream.
Cells have selectively what membranes?
Cells have selectively permeable membranes that allow certain substances to pass through while blocking others. This selectivity helps maintain the internal environment of the cell by controlling the movement of molecules in and out.
Is a mirror selectively permeable?
A mirror is not selectively permeable. The mirror's surface is rigid since it cannot allow any substances to pass through it.
What is the diffusion of water across a selectively premeable membrane called?
It is osmosis .
What characteristic make a cell membrane selectively premeable?
the chemical nature of the membrane
Why is it important for the cell membrane to be selectively premeable?
It makes it harder for viruses and free radicals to reach the nucleus.
What is selective premeable?
A membrane which lets pass some materials and stops other is known as a selectively permeable membrane.
What process require ATP energy to transport materials across a selectively premeable membrane into the cell?
active transport
The movement of water molecules across selectively premeable?
Osmosis movement of water from high concentration to low concentration.
Is plasma membrane premeable?
The plasma membrane is selectively permeable; it allows some substances to pass through but prevents the passage of other substances
Are the membranes in a dialysis machine premeable or selectively permeable?
The membranes in a dialysis machine are selectively permeable, meaning they allow certain substances to pass through while blocking others. This selectivity allows toxins and waste products to be removed from the blood while retaining essential substances.
What makes up the selectively premeable membrane that controls which molecules enter and leave the cell?
A cell's membrane is made up of a phospholipid bilayer which has several protein channels and various other transport mechanisms built in.
Why is the cell membrane selectively premeable?
It is just a way of keeping some thing out while allowing others to come into the cell. The cell can be destroyed by some things and not by others. It is something like a window screen which allows air to move in and out but keeps out bugs, some of which can be dangerous.
When a drug has a greater effect on a specific organ it is acting?
selectively. an example of this is spinal anesthetic
example of a common object that performs similarly to a selectively permeable membrane?
A paper filter
