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What else can I help you with?
What solute's passed through the 100 MWCO membrane?
using a 100 MWCO membrane means that any element, molecule, ion or particle with a molar mass of less than or equal to 100 will be able to pass through. there is an infinite number of combinations able to pass through. sodium and calcium ions would both pass through for example.
Why urea is not able to diffuse through 20 mwco?
Urea has a molecular weight lower than 20 MWCO, so it should be able to diffuse through a 20 MWCO membrane. If urea is not able to diffuse through a 20 MWCO membrane, it may be due to factors like the membrane being damaged or having a different pore size than expected, or the presence of additional physical or chemical barriers that prevent urea diffusion.
Why do you think the urea was not able to diffuse through the 20 MWCO membrane?
The 20 MWCO membrane has a molecular weight cutoff that is lower than the molecular weight of urea, preventing urea from passing through the pores of the membrane. This size exclusion property of the membrane hinders the diffusion of urea molecules across it.
Are solutes always able to diffuse through a cell's selective permeable membrane?
No, solutes are not always able to diffuse through a cell's selectively permeable membrane. The ability for solutes to diffuse across a membrane depends on the size, charge, and concentration gradient of the solute. Larger or charged molecules may require the assistance of specialized transport proteins to cross the membrane.
Will osmotic pressure be generated if solutes are able to diffuse?
Yes, osmotic pressure can still be generated even if solutes are able to diffuse. Osmotic pressure is a result of the concentration gradient of solute particles across a semipermeable membrane, and it is not affected by the ability of solutes to diffuse.
When osmosis occurs specifically which molecule move across a semipermeable membrane?
Osmosis is defined as the passive movement of water molecules from a region of low solute concentration to a region of high solute concentration through a partially permeable membrane; water molecules are thus exhibiting the movement.
What forms pores in the cell membrane?
Pores in the cell membrane can be formed by protein complexes called ion channels or porins. Ion channels allow specific ions to pass through the membrane, while porins allow the passage of larger molecules or solutes. These pores play crucial roles in regulating the movement of substances in and out of the cell.
What do transport dos?
Transport proteins help move (or "transport") large molecules that aren't able to pass through a cell's membrane, through said cell membrane through means of diffusion.
Which particles-starch or Lugol's-were able to cross the model cell membrane?
The Lugol's solution particles were able to cross the model cell membrane, while the starch particles were too large to pass through. Starch is a large molecule that cannot diffuse across the membrane, while Lugol's solution contains smaller molecules (iodine and iodide ions) that are able to pass through.
How do lipid or oil get through plasma cell membrane?
Lipids and oils are able to move through the plasma cell membrane via simple diffusion. The lipid bilayer structure of the membrane allows for the passive and selective movement of non-polar molecules, such as lipids and oils, without the need for energy input.
Why do small nonpolar molecules cross a membrane?
Small nonpolar molecules can cross a membrane easily because they are able to pass through the lipid bilayer of the membrane due to their size and lack of charge, allowing them to move freely across the membrane.
Can Iodine Potassium Iodine when mixed with a starch diffuse through a semipermeable membrane?
No, iodine potassium iodide mixed with starch cannot diffuse through a semipermeable membrane because the starch molecules are too large to pass through the pores of the membrane. Only smaller molecules like iodine will be able to pass through.
