Monday May 3rd

Today we learned about something new, it is called OSMOSIS. First of all, what is osmosis? (I didn't get it on the first time neither).

Osmosis is the movement of water through a semipermeable membrane; in high school words, "Osmosis is the action in which a cell let water pass through its wall (membrane)", we used the Girls and Boys example, but because of the dirty mind we have we understood very well and also laugh in the process.

Also, to understand better the teacher used the example of the fresh water fish and the salt water fish: If we put a cell of a salt water fish in a tank with fresh water a lot of water is going to enter to the cell and eventually is going to blow up (the cell, not the fish XD). The opposite thing occurs with a fresh water molecule and a salt water tank (the cell "dries up").

Another concept we saw was the Dyalisis: it is the movement of solute through a semipermeable membrane (the cell lets the particles of solute to go outside or inside so the concentration of both can be equal).

Homar Hurtado