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What does a cell membrane have that makes it easier for certain molecules to cross the cell membrane?
Nicolerader2
A simple answer is transport proteins. There are several types. Some require the use of energy, while other simply use a gradient to transport.
Wiki User
∙ 12y ago
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How membrane is selectively permeable?
means that the cell membrane has some control over what can cross it, so that only certain molecules either enter or leave the cell
How is the membrane permeability?
means that the cell membrane has some control over what can cross it, so that only certain molecules either enter or leave the cell
Which molecules do not normally cross the nuclear membrane?
DNA
Which feature of a memebrane describes whether molecules can cross the membrane?
permeability
How do most molecules cross the cell membrane?
Diffusion or if the molecules are too large they go through the transport proteins.
How membrane is selectively permeable?
means that the cell membrane has some control over what can cross it, so that only certain molecules either enter or leave the cell
How easy or hard is it for polar molecules to pass through the cell membrane?
Polar molecules are effectively charged molecules. It's hard for them to cross the cell membrane because the membrane is comprised of an uncharged phospholipid bilayer. Charged molecules tend to have specific protein channels that allow them to cross the membrane.
What is a thin sheet of materials that selectively aloows certain molecules to cross but prevents others from crossing?
Semi-permeable membrane
Which feature of a membrane describes molecules whether can cross the membrane?
permeability
Which molecule of a membrane describes whether molecules can cross the membrane?
permeability
What feature of membrane describes whether molecules can cross the membrane?
permeabiity
What is most likely to occur if the sugar molecules cross the membrane?
Sugar molecules move outside of the membrane.
The side from which more water molecules cross the semipermeable membrane?
The pure solvent side is the side from which more water molecules cross the semipermeable membrane.
What is mosly likely to occur if the sugar molecules can cross the membrane?
sugar molecules move outside of the membrane. novanet
How is the membrane permeability?
means that the cell membrane has some control over what can cross it, so that only certain molecules either enter or leave the cell
Which molecules do not normally cross the nuclear membrane?
DNA
What is a membrane called when only certain things can cross a membrane?
a membrane that only allows certain things to cross is called "selectively permeable"
