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Why is the selective permeability of the plasma membrane essential for normal cell function?
Waste must be let out of the cell, while nutrients must be kept in. At the same time, nutrients must be let in, and toxins must be kept in.
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it only allows specific things to enter.
Regulates what enters and leaves the cell
The Plasma Membrane is a selectively permeable membrane as it only allows entry and exit of some selected molecules into and out of the Cells. It also prevents movement of s…ome other materials, therefore the plasma membrane is called a selectively permeable membrane.
it regulates what materials enter and leave the cell
Proteins that span the plasma membrane creating a selectively permeable membrane that regulates which molecules enter and leave a cell?
Transport proteins :)
A cell membrane is selectively permeable because it only allows particles to move across them due to different concentrations. Molecules move from areas of low concentrati…on to high concentration.
selectivley permeable membranes only allow certain materials to pass through. It allows some molecules to enter the cell and blocks entry to others.
Because they allow the passage of water, lipids, nutrients and ions into the cell while checking large molecules and larger polar molecules. These are controlled by transport …proteins in the cell membrane. Also the membrane can surround molecules and pinch off so that molecules can be transported in and out of the cell.
The plasma membrane is selectively permeable because it needs to allow certain things in and certain things out. The plasma membrane is a selectively permeable membrane as i…t allows the entry and exit of some selected substances only.
It is a membrane in cells that only allows certain things in. For example a long time ago large and small cats had an epidemic of acquired immune deficiency syndrome (aids). a… few cats had cells with selectively permeable membranes that for some reason wouldn't let the aids virus in. Those cats survived and now most cats are resistant to aids. IN ADDITION:Imagine 3 sheets of paper. The first sheet had holes about the size of a golf ball. The second had holes the size of a grape. The third had holes the size of a needle in it. You stack the three together with a space between the three so that these particles can move around a little bit. Now, mash up a whole orange and pour this material on the three membranes. The orange peel can go only as far as the holes will allow it and will stop at the first and may make it to the 2nd sheet. The seeds and pulp will go through the first and second layer but will get stopped by the third. The juice will pass through all three. Another good example is your skin, It allows carbon dioxide and sweat to exit the body but keeps the blood in. It selects what can and cannot pass through its membrane. Some membranes work in one direction only, others allow passage either way. exaclty yay we did it lol plasma membrane
It is selective about what can come in and out of the cell. An example of a Selectively Permeable membrane is a cell membrane.
When a cell's membrane is permeable, it means that only certain proteins and other molecules can go in and out of the porous membrane, through protein pumps and other pathways…. Some molecules stay inside the cell, while others float outside. Starches, for example, are large molecules that cannot pass through the membrane.
The cell needs to control what enters and leaves. It needs to keep somethings in and other things out. However, only the Selectively cells can enter and go out of the cell! Th…is is why the selectively permeable membrane is permeable! A cell membrane (the outer casing or inner casing in a plant cell) is selectively permeable because some materials can pass freely through the cell membrane while others cannot.
it´s selectively permeable because some substances can pass across the membrane and others cannot, and it´s always trying to keep the proper amount of water and nutrients in…side and outside the cell.
The pores of the cell membrane only allow objects of a certain size or polarity through. The lipids that make up the membrane have a certain polarity at the head and tail and …only certain objects are allowed through because of this.
A cell membrane (the outer casing or inner casing in a plant cell) is selectively permeable. This is because some materials can pass freely through the cell membrane while oth…ers cannot.
gases such as oxygen and carbon dioxide