Is the cell surface membrane permeable to methylene blue?
Well, the cell surface membrane is actually semipermeable, then yes, we can say that it is permeable to methylene blue, because after an experiment I did at school, I noticed that the cells turned into such colour.
It lets some materials enter, or some not; in this case it does let the methylene blue goes through, and the cell it self, in fact turns of that colour.
This is because the cheek cell is transparent. Since the membrane of the cheek cell is selectively permeable, it allows the methylene blue to enter the cell , therefore makes it blue in color from the inside. Then we are able to see the cheek cell properly under a microscope... please note. : we are supposed to add a bit of water and gliserene too . WATER : to transfer the cheek cells on to…
because methylene blue turns colourless when it is reduced by hydrogen. during respiration hydrogen is produced and instead of reducing NAD, it reduces methylene blue and turns methylene blue colourless. if methylene blue goes from blue to colourless then this shows that the cell is respiring as it is producing a suffiecient amount of hydrogen to decolourise methylene blue
In cellular respiration, oxygen is the final electron acceptor at the end of the electron transport chain. In the absence of oxygen methylene blue can substitute as this electron acceptor. In its oxidized state, methylene blue is blue in color. However, in its reduced state, methylene blue becomes colorless or clear. Consequently, if methylene blue is added to a solution in which cellular respiration is occurring and oxygen is unavailable, the solution will become colorless…
you can get methylene blue powder from a scientific store, it comes in powdered form. its pretty soluble in water and alcohol etc. the stain is made by dissolving an appropriate amount on methylene blue in a solvent, e.g for 0.1 dissolve 0.1% gram of methylene blue in 100 gram water, for 9% dissolve 9 grams
Yes, methylene blue can be used in many foods, as it in non-toxic to humans (though it can discolor urine). Methylene blue was used by Italian actor and gourmand, Ugo Tognazzi for his risotto alla parmigiana (risotto blu). He added methylene blue to the standard ingredients (butter, onions, Parmesan cheese, and white wine), turning it into a rather striking "blue risotto."