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
... [Show More] (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 hemoglobinEven though the amino acids sequence between subunits of hemoglobin and myoglobin are not
exactly the same, there are other similarities between the two proteins. Which level of protein
structure is not found in both molecules? Correct Answer- Quarternary
Fetal hemoglobin binds to oxygen tightly at lower oxygen concentrations since its R state is the
preferred structure. Correct Answer- True
Hb (hemoglobin) binds to CO (carbon monoxide) with a higher affinity than oxygen and
stabilizes the R (relaxed) state Correct Answer- True
Hemoglobin acts as a buffer and controls the pH of the blood by binding to h+ ions. Correct
Answer- True
Hemoglobin and myoglobin proteins bind to molecular oxygen. However, the protein part of
the hemoglobin does not bind directly to the oxygen. Instead a specific atom helps bind the
oxygen - Correct Answer- Iron
Hemoglobin consists of 4 protein subunits. Each subunit contains a heme group that holds an
iron atom, which can bind to: Correct Answer- an oxygen molecule [Show Less]