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Does selectively permeable and semi permeable mean the same thing?
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∙ 12y ago
nope
Wiki User
∙ 12y ago
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How does the cell membrane help maintain homeostasis?
The cell membrane helps a cell maintain homoeostasis by regulating the movement of substances in and out of the cell. The cell membrane is a lipid bilayer which is selectively permeable to substances.
Why do Paramecium need to remove water?
The simple answer is osmosis. Osmosis is the movement of water from a dilute solution to a more concentrated solution through a semi-permeable membrane*. Any animal in freshwater has a higher concentration of dissolved substances in its cells than the surrounding water. A Paramecium is enclosed by a semi-permeable cell membrane, which lets water in but prevents most dissolved substances leaking out. Under these conditions osmosis will occur and the cell will gain water. To prevent itself swelling up and bursting Paramecium has a contractile vacuole, a structure in the cell which fills up with water and periodically expells it back into the surroundings. * The semi-premeable membrane is also called partially permeable or selectively permeable, which all mean basically the same thing.
Does the cell membrane acts like a strainer?
A vegetable strainer is similar to a selectively permeable membrane because it only allows certain materials to pass through. A strainer filters the large particles such as vegetables, but allows water to permeate.
Is the membrane of neurons very permeable to Na when at rest?
the same as that to potassium
Does the nervous system and the CNS mean the same thing?
CNS is an acronym for Central Nervous System, thus they are the same thing.
What does it mean to say most biological membranes are selectively permeable?
Selectively permeability is a property of biological membranes that allows them to regulate the passage of substances across them. In spite of heavy traffic through them, cell membranes are selectively permeable, and substances do not cross the barrier indiscriminately.
What is an example of a common item that performs similarly to a selectively permeable membrane?
cell walls are semi-permeable, that is, they selectively permit only certain things through.
How is osmosis different than diffusion?
Osmosis is the same thing as diffusion, but occuring only with liquids in a selectively permeable membrane. An example of this is that water entering your cells is osmosis, but oxygen entering is diffusion.
What substance can diffuse through a differentially permeable membrane?
Diffusion across a membrane in biology is referred to as 'osmosis' & osmosis is the process by which solvent molecules move from a region of high conc. to low concentration and this can therefore occur only in one direction at a time for a perticular solution. this is a really smart answer im surprised
What is the difference between a semi-permeable and a partially permeable membrane?
An impermeable membrane is that through which no substance can pass. Semipermeable membranes are those that let only solvents, like water, to pass through it. Permeable membranes are those that let solvent and solutes, like ions and molecules, to pass across it. There are also selectively permeable membranes, i.e., membranes that besides allowing the passage of solvent, let only some specific solutes to pass while blocking others. See link:
Is the average and the mean of a number the same thing?
Yes they mean the same thing.
Do astound and astonish mean the same thing?
Yes, they mean the same thing.
Does buttressed mean the same thing as reinforced?
Yes, they can mean the same thing.
Do fear and scared mean the same thing?
Yes they mean the same thing.
Are average and range the same thing?
No, they are not the same thing. Mean and average are the same thing.
Are shabby and different mean the same thing?
Shabby and different do not mean the same thing.
Does elimination mean the same thing as abolition?
These two words can mean the same thing.
