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.
The Chemistry of Carbon. Because individual carbon. atoms can form multiple covalent bonds, organic molecules. can be quite complex. 3.2 Proteins perform the chemistry of the cell. The Many Functions of Proteins. Proteins can be cata-. lysts, transporters, supporters, and regulators. Amino Acids Are the Building Blocks of Proteins.