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chemistry/biology teacher info needed

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By (user no longer on site) OP   
over a year ago

hi , I just had a heated discussion with my daughter over osmosis and diffusion so would like some info, I thought osmosis was stronger solution eg saline, to weaker through semi permeable membrane , she says its the water transfers to the stronger solution weakening it help please

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By *stwoCouple
over a year ago

anywhere

Google might be better

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By *ourbonKissMan
over a year ago

a land up north..... of leicester

I think your daughter may be correct

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By *emmefataleWoman
over a year ago

dirtybigbadsgirlville

Your daughter is correct.

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By (user no longer on site)
over a year ago

Yep the little one is correct!

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By (user no longer on site)
over a year ago


"hi , I just had a heated discussion with my daughter over osmosis and diffusion so would like some info, I thought osmosis was stronger solution eg saline, to weaker through semi permeable membrane , she says its the water transfers to the stronger solution weakening it help please "

Pardon?..

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By (user no longer on site)
over a year ago

Doh!!!

Tell her to not undermine you and go to bed . Then just hope she forgets all about it .

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By *ophieslutTV/TS
over a year ago

Central

Think of it like a plant that you have growing. There's water in the ground, probably with some dissolved nutrients, and there is a more concentrated solution of nutrients and other plant matter, inside the plant. There is either osmotic pressure, where there's a difference across the cell membrane, or there isn't, in which case there is equilibrium, and nothing gets transported. The cells are aiming to achieve equilibrium, hence facilitating transport of the solution, when there is a differential.

The root cells have little holes in them, through which certain chemicals can travel. In this instance, the water, and weakly dissolved nutrients, will pass through the root cell membrane, via the process of osmosis. The root cells will then allow the solution to travel through the rest of the plant, partly aided by other factors, such as transpiration, from leaves. Thus the plant increases the volume of liquid that it contains.

If you over fertilise your plants, the soil water becomes stronger than the solution inside the plant, and water is drawn out of the plant, into the soil. This ultimately will dry your plant out, perhaps looking like it's burnt. Similar thing happens if you spill some on its leaves, and it's more highly concentrated than the solution inside the leaf, and water is drawn out of the leaf.

OK, it's a while since I did biology etc, but that's how I see it in my garden.

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By (user no longer on site) OP   
over a year ago

many thanks for the reply's , mmmm still think she is wrong , lol

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By *ichaelangelaCouple
over a year ago

notts

shes female... they are never wrong... and they always remember when the male is wrong and never lets him forget it.

its their job

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By (user no longer on site)
over a year ago


"Think of it like a plant that you have growing. There's water in the ground, probably with some dissolved nutrients, and there is a more concentrated solution of nutrients and other plant matter, inside the plant. There is either osmotic pressure, where there's a difference across the cell membrane, or there isn't, in which case there is equilibrium, and nothing gets transported. The cells are aiming to achieve equilibrium, hence facilitating transport of the solution, when there is a differential.

The root cells have little holes in them, through which certain chemicals can travel. In this instance, the water, and weakly dissolved nutrients, will pass through the root cell membrane, via the process of osmosis. The root cells will then allow the solution to travel through the rest of the plant, partly aided by other factors, such as transpiration, from leaves. Thus the plant increases the volume of liquid that it contains.

If you over fertilise your plants, the soil water becomes stronger than the solution inside the plant, and water is drawn out of the plant, into the soil. This ultimately will dry your plant out, perhaps looking like it's burnt. Similar thing happens if you spill some on its leaves, and it's more highly concentrated than the solution inside the leaf, and water is drawn out of the leaf.

OK, it's a while since I did biology etc, but that's how I see it in my garden."

Smartarse!!

(But very impressive "knowledge")

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By (user no longer on site)
over a year ago


"hi , I just had a heated discussion with my daughter over osmosis and diffusion so would like some info, I thought osmosis was stronger solution eg saline, to weaker through semi permeable membrane , she says its the water transfers to the stronger solution weakening it help please "

Technically, you are both wrong. It is the transfer of a weaker solvent (and not just water, but often so) through a semi permeable membrane to a stronger solution. But she is closer than you are.

* Know-it-all Ltd. An annoying company.

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