Selectively permeable describes a cell membrane that allows certain ions or molecules to pass through it by means of passive or active transport.
it allows some substances to pass through but blocks the passage of others.
If you break down the two words, selective means to only pick certain things, and permeable means to let pass through. When you talk about something being "selectively perme…able", it usually refers to a cell membrane because it only lets in certain nutrients and lets out proteins and what not. I hope this answers your question.
Selective permeability relates to the properties of a membrane. It allows the passage of some substances and not others. Theoretically, it can be thought of as a sheet with ho…les of a set size in it. Only objects that are smaller than these holes will be able to pass through the sheet. In a proper membrane the 'holes' are usually a type of protein channel that can control permeability by charge as well as size.
In biology, a selective permeable cell means the cell only allows certain molecules to pass through. This concept was first introduced to understand the process of osmosis, wh…ere solute molecules move along a concentration gradient through a semi permeable membrane (also known as a selectively permeable membrane) Cells allow water molecules and small ions to pass through their membranes without the expenditure of energy.
Look at the words - "selective" and "permeable". What does 'selective' mean? You select what to eat - an apple or an orange; you select where to sleep - the bed or the f…loor; you select what movie to see. So, selective means to have a choice between things. Permeable, with respect to membrances, means allowing substances to go through. In human terms, a DOOR is permeable, but a wall is not. [and technically speaking, sometimes a window is permeable] So, if a membrane is "selectively permeable" this means that only some things can go in or out through the membrane. We have many of these membranes in our bodies' cells - membranes that let sodium [Na+] ions in but not calcium [Ca+2] ions. This is like a rock concert, and only some people have tickets to go in.
this means that cell membrane allows only selected substances to enter the cell.
semi permeable means the cell chooses what comes into it, they have this so they can let food particles and water in but not large items or other cells
it only allows specific things to enter.
It means that it can control what goes in, and out of the cell.
means they allow some things to cross, but not others.
Semi-permeable is when an object can intake a substance, but at much less amounts. I believe your skin is such a mechanism. It is also Selectively permeable, in which only oil… based things can go in(this is for skin). Selective means only certain substances period can be intaken, period.
"Selectively Permeable" means that the membrane can let some molecules through, and it blocks others. The cell can let things in through diffusion (when stuff just floats thro…ugh the membrane easily), facilitated diffusion (stuff gets in with the help of a transport protein), or osmosis (a certain type of diffusion for water only).
A cell membrane that allows certain particles through but not others e.g. it may let potassium ions through but not have large enough holes to let water molecules through.
Selective permeability refers to the function of plasma membranesthat is needed to maintain homeostasis in a cell and preventforiegn substances from entering through the cells… walls. Some molecules can pass, some are blocked
The cell membrane has selective permeability, which means it is able to control which molecules cross it. The cell membrane is flexible and porous, rather than a sold stru…cture.