BioChem C785 - WGU - Module 3 – with all Questions and Answers 100% Correct

Addition of oxygen alters the shape of the iron-heme complex, and therefore its absorption of light as indicated by its color change from dark purple (the color of hemoglobin in venous blood) to brilliant scarlet (the color of hemoglobin in arterial blood). Correct Answer- True As carbon monoxide binds to hemoglobin, the protein subunits change conformation to allow carbon monoxide to bind faster, This process is called Correct Answer- positive cooperatively Bohr effect is a relationship between hemoglobin's oxygen binding behavior in conjunction with the pH of the surroundings. When the pH is high, hemoglobin has high affinity for oxygen and binds oxygen. Correct Answer- True BPG stabilizes the T (tense) states of hemoglobin Correct Answer- True Carbon monoxide outcompetes oxygen for attachment to the heme group of hemoglobin where it is permanently, covalently attached. Correct Answer- True Carbon monoxide shifts the oxygen-hemoglobin dissociation curve to the left, while carbon dioxide shifts this curve to the right. Based on your knowledge of the Bohr Effect, what is true? Correct Answer- Carbon dioxide decreases the hemoglobin's affinity for oxygen, while carbon monoxide increases it. Carbonic anhydrase is an important enzyme present in the red blood cells that aids in efficient transportation of carbon dioxide in the form of bicarbonate ions, from tissues to lungs. Correct Answer- True Cooperatively refers to Correct Answer- structural changes that increases the affinity for oxygen in hemoglobin