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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 some other materials, therefore the plasma membrane is called a selectively permeable membrane.

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12y ago
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9y ago

Because it permits only selected substances to pass through it.

Only water can pass through whenever it wants, viruses cannot pass through unless it hides behind something.

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14y ago

because it only allows specific molecules to enter and exit the cell. (that is what selectively permeable is)

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8y ago

The membranes only allow (or select) what goes in and out.

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Q: Why is the plasma membrane called a selectively permeable membrane?
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Why is the plasma membrane selectively permeable?

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 it allows the entry and exit of some selected substances only.


To what is the plasma membrane said to be?

Semipermeable or selectively permeable.


What is the basic strcture of a cell membrane?

Cell membrane is elastic and transparent. It can be impermeable, permeable, semi-permeable or selectively permeable. In humans the plasma membrane is selectively permeable that is it allows entry to certain substance.


What is the structural model of the plasma membrane called-?

structural model of plasma membrane is called the selectively permeable membrane Structural model of the plasma membrane is called Fluid Mosaic Model.


What is definition of selectively permeable?

The selectively permeable phospholipid bilayer (a.k.a plasma membrane) is 'selectively permeable' because it selects which molecules it allows to permeate (pass through).


What forms an envelope around the cell described as and selectively permeable?

The plasma membrane (cell membrane).


Is a cell membrane permeable impermeable or partially permeable?

Plasma membranes are selectively permeable.


Is plasma membrane premeable?

The plasma membrane is selectively permeable; it allows some substances to pass through but prevents the passage of other substances


What makes up a selectively permeable membrane?

Plasma membrane filters what the cell needs and keeps out what will harm it. this property is called selective permeability.


Selectively permeable part of the cell that controls what enters and exits the cell?

Plasma (Cell) Membrane


What is the function of the cell selectively permeable plasma membrane?

it regulates what materials enter and leave the cell


What kind of proteins span the plasma membrane creating a selectively permeable?

Transport protiens