Question

i m too much confused between selectively permeable and differentially permeable and semi permeable ??? plz help

Answer 1

Where you're confused?

Answer 2

between these two terms how can we differentiate between them

Answer 3

A semipermeable membrane, also termed a selectively permeable membrane, a partially permeable membrane or a differentially permeable membrane, is a membrane that allows certain molecules or ions to pass through it by diffusion and occasionally specialized "facilitated diffusion".

Answer 4

so both the terms have same meaning ??

Answer 5

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.

Answer 6

nd what about differentially permeable

Answer 7

Differentially permeable: A membrane that allows the passage of small molecules but not of large molecules.
(Google says)

Answer 8

hmmm

Answer 9

Still confused?

Answer 10

a bit

Answer 11

Its Cell membrane..

Answer 12

yeah

Answer 13

alex you know what a membrane is and know what the word permeability means?

Answer 14

yeah i do

Answer 15

then you should understand these terms also

Answer 16

Good then then we use some Greek and Lain to understand the rest:
-Semi meaning half or some.
-differential meaning a difference between things.
-selective the word speaks for it self.

They all describe as Ryaan that our permeability is limited to some kind that, that only some species (molecules and ions) are allowed to pass. We can demonstrate this by using our knowledge about the membrane.
The membrane contain a hydrofobic core of lipids, we know that if we drop water into oils they don't mix... this is the same principle... if try make a hydrophile (from greek phials = loving) molecule get passed the membrane it won't get through b/c it is repelled.
So 4 another important words: hydrophile, hydrophobe, lipophile and lipophobe.
Philos = love
Phobos = hate

Answer 17

okk thnks for the answer

Answer 18

Thumbs up for Frostbite..

Answer 19

also thnx to ryaan

Answer 20

You did the main work describing it Ryaan :)

Answer 21

And you explained it awesomely: Frostbite :3

Answer 22

Sorry I forgot, a better translation for phobos is fear. Eris would more be hate.