(n.) = affair ; issue ; matter ; topic ; subject matter ; business [businesses, -pl.] ; question ; concern ; subject line ; subject. Ex: And also until Groome appeared, newcomers were a nullity as an active political force, exerting little influence in city affairs.
Like all other proteins, enzymes are made of amino acids. Each enzyme is made of between a hundred and upwards of a million amino acids placed like pearls on a string. Each amino acid is bonded to the next by chemical bonds.The vast majority of enzymes are made of only 20 different kinds of amino acid.nzymes break down your food. Enzymes are the workhorses of the body. When you eat, enzymes break down the food into tiny particles which can be converted into energy in the body. The process starts in the mouth, where an enzyme called amylase attacks all incoming food particles.
Red blood cells contain the oxygen-carrier protein hemoglobin. It is composed of four globular peptides, each containing a heme complex. In the center of each heme, lies iron (Figure 10.6). Iron is a key component of hundreds of metabolic enzymes.Many of the proteins of the electron-transport chain contain ironâsulfur clusters involved in the transfer of high-energy electrons and ultimately ATP synthesis.ron is a key component of hundreds of metabolic enzymes. Many of the proteins of the electron-transport chain contain ironâsulfur clusters involved in the transfer of high-energy electrons and ultimately ATP synthesis.