Though strictly speaking, an antibody is not the same as an immunoglobulin; B cells can produce two types of immunoglobulins-surface immunoglobulins, which are B cell receptors; and secreted immunoglobulins, which are antibodies. So antibodies are one of two classes of immunoglobulins.ach antibody binds to a specific antigen; an interaction similar to a lock and key. An antibody (Ab), also known as an immunoglobulin (Ig), is a large, Y-shape protein produced by plasma cells that is used by the immune system to identify and neutralize pathogens such as bacteria and viruses.
About 95 percent of the dry weight of the red blood cell consists of hemoglobin, the substance necessary for oxygen transport. Hemoglobin is a protein; a molecule contains four polypeptide chains (a tetramer), each chain consisting of more than 140 amino acids.
Hemoglobin is the part of the red blood cell that carries oxygen. Hemoglobin is a protein that has iron on it, and this iron is what the oxygen binds to. This is why iron defi â¦ ciency can result in anemia. 9 people found this useful.he hemoglobin molecules in red blood cells contains four iron atoms which all can have four bonds to oxygen atoms. Thus, red blood cells â¦ transport oxygen.