In vertebrates, these molecules are the proteins myoglobin and hemoglobin. Red blood cells (above) contain hemoglobin. Blood is bright red (left), due the presence of oxy-hemoglobin. Hemoglobin (or haemoglobin, frequently abbreviated as Hb), which is contained in red blood cells, serves as the oxygen carrier in blood.he iron atom in heme binds to the 4 nitrogen atoms in the centre of the porphyrin ring, but this leaves two free bonding sites for the iron, one on either side of the heme plane. The heme group is located in a crevice in the myoglobin molecule, surrounded by non-polar residues except for two polar histidines.
Generally speaking, to work in public health, a masterâs degree is required as bare minimum. This is because this is the kind of education that ensures the graduates are ready to take on true leadership roles, advocating for patientsâ rights and performing advanced research.
Public health is a fast-growing industry that constantly needs new professionals. You can find a variety of career positions within this industry that you can work in, depending on your interests and skills.Some people only get a bachelorâs degree in this field, but the best careers are for those who hold a masterâs degree, or MPH.irectors and managers of industrial hygiene work in the field of environmental health and safety. This is a high paying field for those who can handle the educational requirements, which generally are an undergraduate degree in engineering or chemistry, and also a masterâs degree in industrial hygiene.