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Because the Cell Must Be Selectively Reactive.
If the Cell was not selectively permeable it it would allowed Virus's in, and they could potentially lose essential nutrients because everything would flow in and out of the cell and destroy it
Wiki User
∙ 12y ago
Wiki User
∙ 9y agoThe 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! This 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.
Wiki User
∙ 12y agoit´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 inside and outside the cell.
Wiki User
∙ 9y agoSelective permeability refers to the ability of a membrane to only allow certain objects or items in or out of the cell. Cells must be selectively permeable so that the contents of the cell don't leak out.
Wiki User
∙ 9y agoIt is important for the membrane to be selectively permeable for protection. It prevents harmful substances from entering the cell and damaging it.
Wiki User
∙ 13y agoto allow water molecules in and leave waste out or to leave bigger molecules such as sugar out
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What membrane that allows only some materials to move in and out of the cell is?
Such a membrane is said to be selectively permeable or semi-permeable.
If a substance is able to diffuse across a membrane then the membrane is said to be what?
selectively permeable
Which part of the cell surrounds the cell and allows molecules in and out this cell part also has holes in it and is said to be semi-permeable?
The cell membrane is the thing that surrounds the cell. The cell membrane contains proteins that allow active transport of molecules in and out of the cell.
What happens to animal cell in a solution with high water potential?
Animal cells lack rigid cell wall. When an animal cell is placed in a solution with high water potential, the wanter enters the cell as cell membrane is freely permeable to water. As a result of continuously increasing water potential inside the cell, Cell membrane bursts and the cell is said to be lysed.
What organelle moves substances across the cell in one direction?
The plasma membrane surrounding animal cells is where the exchange of substances inside and outside of cells takes place. Some substances need to move from the extracellular fluid outside cells to the inside of the cell, and some substances need to move from the inside of the cell to the extracellular fluid.Some of the proteins that are stuck in the plasma membrane help to form openings (channels) in the membrane. Through these channels, some substances such as hormones or ions are allowed to pass through. They either are "recognized" by a receptor (a protein molecule) within the cell membrane, or they attach to a carrier molecule, which is allowed through the channels. Because the plasma membrane is choosy about what substances can pass through it, it is said to be selectively permeable.
What membrane that allows only some materials to move in and out of the cell is?
Such a membrane is said to be selectively permeable or semi-permeable.
What is a membrane that allows some substances to pass through but excludes others?
A membrane that lets some substances pass through but not others is known as a semipermeable membrane. Other terms that describe this type of membrane are: selectively permeable, partially permeable, or differentially permeable.
To what is the plasma membrane said to be?
Semipermeable or selectively permeable.
If a substance is able to diffuse across a membrane then the membrane is said to be what?
selectively permeable
What is the membrane said to be if a substance is able to diffuse across a membrane?
selectively permeable
What type of cells have membrane?
The cell's membrane is "selectively permeable" because the cell allows some materials to enter or leave.I'm in grade eight. This is what my Science textbook says:"Because the cell membrane allows certain substances to enter or leave, but not others, it is said to be selectively permeable."
Why is the cell membrance said to be selectively permeable?
it allows only types of molecules to pass through
What type of cell membrane do cells have?
The cell's membrane is "selectively permeable" because the cell allows some materials to enter or leave.I'm in grade eight. This is what my Science textbook says:"Because the cell membrane allows certain substances to enter or leave, but not others, it is said to be selectively permeable."
Which part of the cell surrounds the cell and allows molecules in and out this cell part also has holes in it and is said to be semi-permeable?
The cell membrane is the thing that surrounds the cell. The cell membrane contains proteins that allow active transport of molecules in and out of the cell.
What is a selectivly permeable membrane?
Selectively permeable means that only certain substances are able pass through the cell membrane.A selectively permeable membrane is a membrane that only can be permeated by selective things, in other words a surface that lets some molecules in but not others. Like a cell membrane will let water diffuse into it :)
What is meant by the following statement about the cell membrane The cell membrane is said to be semipermeable.?
It is very selective about what it allows to pass through.
What type of membrane do cells have?
All cells in all living organisms have a version of a nuclear membrane. The nuclear membrane keeps everything inside the cell and harmful things out. Its like our skin, our skin keeps our organs inside and most harmful things out. Plant cells however have cell walls not membrane, but it is the same concept
