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
Transport There are two types of transport that occur between cells: passive and active transport. Passive Transport - Molecules naturally move from an area of high concentration to low concentration. This does not use energy. There are 3 types of passive transport: simple diffusion , facilitated diffusion , and osmosis . - Simple Diffusion: Small and nonpolar molecules more from an area of high to low concentration. If there is more than one solute, then those solutes will be equally distributed across a membrane. These molecules will be able to easily pass through the membrane, which is why it's called simple diffusion: nothing is needed to help it pass through. - Facilitated Diffusion: Polar molecules and ions impeded by the bilayer of the membrane are diffused passively with the help of transport proteins spanning the membrane. Diffusion will occur through protein channels. Again, it moves from high concentration to low concentration. If a large amount of glucose