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Passive diffusion - Urea has its own concentration gradient so it will go from an area of high concentration through the cell membrane into an area of lower concentration.
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∙ 13y ago
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What channels does water cross plasma membranes?
Aquaporins.
Which two factors of the molecule determine whether or not it can cross the membrane?
size and shape. cell membranes are selectively permeable, so only some molecules can get through. (i.e. water can go through, but starch cant) Polarity and size.
Is active transport the only way substances can cross the intestinal membranes?
Diffusion too.
Why does the red blood cell lyse in an isosmotic solution of urea?
Urea is isosmotic to the intracellular fluid of red blood cells, but because the membranes of the blood cells are permeable to urea. Urea enters the cell at a much more rapid rate than other permeable solutes (because of the steep concentration gradient) and the cell fills to it bursts.
Is carpet urea same as nitrogen urea?
No,carpet urea is urea formaldehyde it is aproduced by treating urea with formaldehyde
What are various mechanisms by which substances cross membranes?
there are many different types of mechanisms that can make thing cross cell membranes two of these are by diffusing and active transport.
What channels does water cross plasma membranes?
Aquaporins.
Why cant we use industrial CO2 to mfr urea fertilizer and save the globe from destruction. in fact it was my project in final year engg to design a suitable reactor for making urea.?
Urea is industrially obtained from ammonia and carbon dioxide.
What must digested food particles be able to do?
cross our cell membranes
What is a factor that determines whether molecules can cross a cell membranes?
mass
Can you make meth with urea cold packs instead of ammonia nitrate?
no you cant. your thinking of the shake n bake one pot method and one has to use amonia nitrate, not urea.
Which two factors of the molecule determine whether or not it can cross the membrane?
size and shape. cell membranes are selectively permeable, so only some molecules can get through. (i.e. water can go through, but starch cant) Polarity and size.
What kind of substances do protein channels allow to cross membranes?
Ions and large molecules
Is active transport the only way substances can cross the intestinal membranes?
Diffusion too.
Why does the red blood cell lyse in an isosmotic solution of urea?
Urea is isosmotic to the intracellular fluid of red blood cells, but because the membranes of the blood cells are permeable to urea. Urea enters the cell at a much more rapid rate than other permeable solutes (because of the steep concentration gradient) and the cell fills to it bursts.
How long does it take us to cross the galaxy?
you cant cross the galaxcy!
What is chicken poop called my friend insists it is called urea and I cant seem to find the answer?
Chicken manure can be called by many names, what ever you choose! It has a high nitrogen content as does urea so they are similar but different.
