Hemoglobin and Hemin: Structure and Function

What is the primary function of hemoglobin in red blood cells?

• To provide structural support to red blood cells

• To act as an enzyme in metabolic reactions

• To transport oxygen from the lungs to various parts of the body

• To transport carbon dioxide from tissues to the lungs

How many oxygen molecules can a single hemoglobin molecule carry at one time?

• Four

• Three

• Two

• One

What is the oxidation state of iron in hemin?

• +3

• +4

• +2

• +5

Who first isolated hemin crystals from blood?

• Alexander Fleming

• Robert Koch

• Louis Pasteur

• Ludwig Carol Teichmann

What is the purpose of adding glacial acetic acid in the hemin crystal formation experiment?

• To oxidize the heme group

• To dissolve the blood sample

• To act as a reducing agent

• To neutralize the blood sample