A wholesaler can act as a middleman, brokering deals between these businesses. The sale and distribution of goods to users other than end consumers. Wholesaling involves selling merchandise to retailers, wholesalers and merchants, or to industrial, commercial and institutional users. A wholesaler can act as a middleman, brokering deals between these businesses.
Hemoglobin, which carries iron, gives red blood cells their color. Iron, a mineral you ingest in food, plays a vital role in transporting oxygen to tissues throughout your body. Although iron has other functions as well, acting as an oxygen delivery system is its best-known function.
Iron supplements may affect your blood pressure. Photo Credit Stockbyte/Stockbyte/Getty Images. Iron is a very important mineral. Red blood cells in the body contain hemoglobin, a protein that transports oxygen to the cells. Myoglobin performs a similar function for muscle cells. Both hemoglobin and myoglobin contain iron, although most of the iron in the body is found in hemoglobin.