Fibril and hence the whole muscle. Elastin is a fibrous protein common in various soft tissues, like skin, blood vessels and lung tissue. Each monomer connects with each other, forming a 3D network, with ability to endure over 200% strain before deformation. Keratin is a structural protein mainly found in hair, nails, hooves, horns, quills. Basically keratin is formed by polypeptide chains, which coil into α-helices with sulfur cross-links or bond into β-sheets linked by hydrogen bonding. β-keratin, which is tougher than α-conformation, is more common in birds and reptiles. Resilin is an elastomeric insect protein, consisting of both α-helices and
Artificial nails off points. The competitors will be judged on how neat their work space is and how organized they are. Acrylic nails help conceal or fix broken, damaged, short, or otherwise considered "undesirable" nail appearance. They also help prevent nail biting, breakage, and splits. They are used when people are not able to grow the length and strength of natural nails that they desire. This problem can be solved by using certain nail techniques such as nail tipping, sculptured nails, nail wrapping, or acrylic overlays. Acrylic nails often make natural nails thin when removed though are rather durable during wear. If