[Answer] Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction?

Answer: because urea was too big to pass through the 20 MWCO membrane
Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction?

Mulkidjanian and co-authors think that the marine environments did not provide the ionic balance and composition universally found in cells as well as of ions required by essential proteins and ribozymes found in virtually all living organisms especially with respect to K + /Na + ratio Mn 2+ Zn 2+ and phosphate concentrations.

The blood–brain barrier (BBB) is a highly selective semipermeable border of endothelial cells that prevents solutes in the circulating blood from non-selectively crossing into the extracellular fluid of the central nervous system where neurons reside. The blood–brain barrier is formed by endothelial cells of the capillary wall astrocyte end-feet ensheathing the capillary and pericytes …

The lipid bilayer (or phospholipid bilayer) is a thin polar membrane made of two layers of lipid molecules.These membranes are flat sheets that form a continuous barrier around all cells.The cell membranes of almost all organisms and many viruses are made of a lipid bilayer as are the nuclear membrane surrounding the cell nucleus and membranes of the membrane -bound organelles in the cell.

Factors affecting migration of nucleic acids. A number of factors can affect the migration of nucleic acids: the dimension of the gel pores the voltage used the ionic strength of the buffer and the concentration intercalating dye such as ethidium bromide if used during electrophoresis.. Size of DNA. The gel sieves the DNA by the size of the DNA molecule where…

Leave a Reply