Hemoglobin is a quaternary protein structure on a red blood cell involved in
oxygen transport. Hemoglobin A1 has two
a-chains and two ß-chains. Hemoglobin A2
has two a-chains and two & chains. In spite
of the structural differences, both
hemoglobin A1 and A2 perform the same
functions.
Which of the following statements explains
why both hemoglobin types perform the
same functions?

hemoglobin binds to oxygen and releases it near cells that are performing cellular respiration

The amino acid sequences changed the alpha and beta chains because of molecular interaction.

you know that this symptom is misleading and quite often is related to: heart attack

a heart attack is a condition that occurs when the blood flow that transports oxygen to the heart muscle is damaged or cut off completely. the coronary arteries that supply the heart muscle with blood flow can be blocked by the accumulation of plaque. also, when the plaque within the heart artery breaks, it creates blood clot that can also hinder the blood flow. men that are over 45years of age and women that are over 55years of age are at risk of having a heart attack. the symptoms of a heart attack include chest discomfort, chest pain, coughing, and shortness of breath.