Protein or the physical region of the protein that participates in chemical catalysis. In solution proteins also undergo variation in structure through thermal vibration and the collision with other molecules. Proteins can be informally divided into three main classes, which correlate with typical tertiary structures: globular proteins, fibrous proteins, and membrane proteins. Almost all globular proteins are soluble and many are enzymes. Fibrous proteins are often structural, such as collagen, the major component of connective tissue, or keratin, the protein component of hair and nails. Membrane proteins often serve as receptors or provide channels for polar or charged molecules to pass
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