85%/15% cotton/nylon. Unisex. One size fits all. GI Government Issued style. Made In USA. Thermal boot socks. Keeps your feet warm in extremely cold weather. Great for outdoor activities and could be worn around the house to keep feet warm. HW-Heavy Weight. Comfortable fit.
1 contribute to the mechanical structure of animals, including humans, e.g. keratin in hair and fingernails, and fibrous proteins such as collagen in tendons. 2  enable animals to move, e.g. myosin in muscle.  facilitate transport of smaller molecules around animals' bodies, e.g. haemoglobin.
Protein Structure. 1  Proteins are macromolecules that play many functions in the cell. 2  They are used for support, storage, transport of other substances, defense against invaders, and catalytic enzymes. 3  This is just a brief overview of protein structure. Proteins are composed of repeating units called amino acids.