Well, if you look at the scientific process, the first step is to have a question to base it on.
Controls what enters and leaves the cell
Polar amino acids tend to be hydrophilic, meaning that they bond to water. These are those that establish hydrogen bonds to water. They are considered polar because they have a R group that's hydrophilic. Because of this characteristic, in a protein they tend to a be a at the surface maintaining contact with the surrounding solutions. The most common polar amino acids are: arginine, lysine, glutamic acid, and aspartic acid.
If you are suffered to a broken nose the bones that are potentially involved are inferior nasal concha, lacrimal, vomer, and nasal bones.
A Broken nose is a fracture of nasal bones, because the nose has such a prominent and unprotected position in the center of the face. Boken nose significantly alters your appearance, it can also make it much harder to breathe through the nose.
