Want this question answered?
Any molecule smaller than the holes in the membrane can pass through is the membrane is permeable. If the membrane is semi-permeable, then only molecules that the membrane selects can pass through. Electronegativity and existence of lipid layers are common selective traits for semi-permeable membranes.
The Secondary cell wall has three layers, while the Primary cell wall is semi-permeable and admits the passages of small molecules and proteins into and out of the cell.
I semi-permeable membrane is a membrane when only certain substances can pass through it.it is a membrane that will only allow certain molecules through it . in general oxygen , food and water are allowed to enter ; waste products are allowed to exit and harmful substances are kept out. hope this helps.
artesian formation (; your welcome!
Permeable layers allow either all or only certain things in and out. The ground is permeable because it allows water to sink through it. Skin is also permeable because it takes in oxygen and liquids but it keeps other foreign objects out. The skin can let out waste by sweating.
Aquifers are permeable layers of rock that have non permeable layers of rock under them so water remains in the permeable layers
Any molecule smaller than the holes in the membrane can pass through is the membrane is permeable. If the membrane is semi-permeable, then only molecules that the membrane selects can pass through. Electronegativity and existence of lipid layers are common selective traits for semi-permeable membranes.
permeable
Those soil layers are permeable.
Those layers of soil are called permeable.
Aquifers are made of permeable rock layers
A plant root's membrane is permeable to water, but not to all dissolved substances. A permeable bandage allows air to reach the wound. Water enters permeable layers underground which can filter it.
Cell membrane
The Secondary cell wall has three layers, while the Primary cell wall is semi-permeable and admits the passages of small molecules and proteins into and out of the cell.
I semi-permeable membrane is a membrane when only certain substances can pass through it.it is a membrane that will only allow certain molecules through it . in general oxygen , food and water are allowed to enter ; waste products are allowed to exit and harmful substances are kept out. hope this helps.
Permeable rock strata are called aquifers.
Then fluid can travel through the rock, and the rock is said to be "permeable".