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Urea can not diffuse rapidly across plasma membranes. The diffuses usually goes the direction of the area with lower concentration.
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What channels does water cross plasma membranes?
Aquaporins.
Why does the red blood cell lyse in an isosmotic solution of urea?
Urea is a solute that can cross the cell membrane freely. When red blood cells are in an isosmotic solution of urea, water from the cell will move out due to the urea concentration, causing the cell to shrink and eventually lyse.
What are the penetrating solute?
Penetrating solutes are molecules that can cross a membrane barrier easily due to their chemical properties, such as size and lipophilicity. Examples include urea, ethanol, and acetone. These solutes can equilibrate across cell membranes rapidly, impacting cell function and osmotic balance.
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.
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.
Why does the red blood cell lyse in an isosmotic solution of urea?
Urea is a solute that can cross the cell membrane freely. When red blood cells are in an isosmotic solution of urea, water from the cell will move out due to the urea concentration, causing the cell to shrink and eventually lyse.
What channels does water cross plasma membranes?
Aquaporins.
What are the penetrating solute?
Penetrating solutes are molecules that can cross a membrane barrier easily due to their chemical properties, such as size and lipophilicity. Examples include urea, ethanol, and acetone. These solutes can equilibrate across cell membranes rapidly, impacting cell function and osmotic balance.
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
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.
How long does it take us to cross the galaxy?
you cant cross the galaxcy!
What is the role of urea in lysis buffer?
Urea disrupts hydrogen bonding and denatures proteins, helping to break down cell membranes and release cellular contents during lysis. It also helps to solubilize proteins by disrupting non-covalent interactions, aiding in protein extraction and purification.
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.
