Welcome to Biological Principles, Simplified! Are you in need of help or just want to learn biology? Maybe you want to surprise your biology teacher with concepts that only an AP bio kid would know (and possibly become their favorite, smartest student?) Congrats, you're in the right place :) I try to simplify biological concepts here, with pictures to improve comprehension. In later posts, I might go deeper than a normal biology curriculum would go or introduce a topic not even in the biology curriculum. Everything will build on previous posts so if it's ever too complicated, go back to the last post and try to fully grasp everything. Of course, you can always leave a comment! I'll try to respond within a day, and most definitely within a few days. If you ever see this guy: That means stop scrolling! The answer to a problem will be below this lovely monkey. Try to figure out the answer before scrolling to test your understanding (it might be the answer to a riddle or
Tonicity Tonicity is the ability of a surrounding solution to cause a cell to gain or lose water. A hypotonic solution refers to a solution that, when surrounding a cell, causes the cell to gain water. This is because there is more solute inside the cell than outside the cell. In Greek, 'hypo' means less. Since there are more solutes inside the cell than outside, water will move into the cell. A hypertonic solution refers to a solution that, when surrounded a cell, causes the cell to lose water. This is because there is less solute inside the cell than outside the cell. In Greek, "hyper" means more. Since there are more solutes outside the cell than inside, water will move out of the cell. An isotonic solution refers to a solution that, when surrounding a cell, doesn't induce any change in the water content of the solution or cell. This is because there are equal amounts of solute inside and outside the cell, so there will be no net movement of wate