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THats easy .. water always enter the cell by osmosis (because its fresh water it has high water potential ) but in plants the cell becomes turgid and then cell wall pushes outwards and therefore no more water can enter the plant so , the cell wall actually restricts flow of water into the cell.
Prokaryotes do not have a nucleas therefore it cannot undergoe mitosis ( no nucleas = no nuclear division which is mitosis )
what is the difference between a plant cell wall being impermeable and a plant cell wall restricting?THats easy .. water always enter the cell by osmosis (because its fresh water it has high water potential ) but in plants the cell becomes turgid and then cell wall pushes outwards and therefore no more water can enter the plant so , the cell wall actually restricts flow of water into the cell.
For animal cells water enters by osmosis and causes cell to burst ( lysis ) but the vacuole prevents it from bursting
mitosis can't occur in prokaryotes since they don't have a nucleus
Water is like a government soldier it comes in to cells and leaves as it likes to ... in a turgid plant cell it is practically 'full' of government soldiers so no room for extra soldiers so the soldiers are RESTRICTED to enter the cell. But at first the water enters the cell through cell wall so cell wall is permeable to water.
In your second choice without Hcl the colour is orange but with HcL the colour is green. In order of increasing intensity of reducing sugar in a solution orange shows a higher intensity of reducing sugar. So since after boiling the intensity actually reduces ( from orange to green) it cannot be a non- reducing sugar. If a non-reducing sugar was present the colour would be brick-red becuse more reducing sugar will e available.
http://www.xtremepapers.com/papers/...A and AS Level/Biology (9700)/9700_w02_er.pdf
There is an answer sheet
i mean the difference between impermeability and restriction for the cell wallHey i still don't get it properly
and the permeability and free entry of cell membrane
coz to me they sound like very similar things:S
Hey i still don't get it properly
and the permeability and free entry of cell membrane
coz to me they sound like very similar things:S
) it allows ANYTHING TO PASS THROUGH IT. Whereas a cell membrane is PARTIALLY PERMEABLE which means of selective substances can enter and leave cell through it. I dont know anything COMPLETELY UNPERMEABLE but it means nothing can move across it ( like lignin i think ).If you sterilize the blood by heating, you would also denature the enzyme, so you can't use that.
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