It must be noted, however, that not all women experience bright red period blood. In fact, menstruation blood can be of numerous shades, including dark red, brown or black, orange and pale red or pink. Every shade has its own causes and some may be quite normal to experience whilst others may need medical treatment.
Proteins make up about 15% of our body mass. They are the most abundant 'solid' substances in our bodies. Each protein has its own precise function under the direction of its own gene. The shapes of proteins are of key importance. These are determined by the sequence of amino acids that make them up. Amino acids are the building blocks (monomers) of proteins. Twenty different amino acids are used to make the body's proteins.
Proteins are molecules made of amino acids. They are coded for by our genes and form the basis of living tissues. They also play a central role in biological processes.For example, proteins catalyse reactions in our bodies, transport molecules such as oxygen, keep us healthy as part of the immune system and transmit messages from cell to cell.ideo: Role of proteins in human development. Each protein has a specific role in our body. However, scientists have discovered that some proteins perform more than 1 role. For example, Dr Julia Horsfield leads the Chromosome Structure and Development Group at the University of Otago.