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You have Iron atoms in hemoglobin. This atom is the binding site for oxygen in case of hemoglobin.
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Which of the choices below is not a factor that promotes oxygen binding to and dissociation from hemoglobin?
number of red blood cells
What is the effect of pCO2 on oxygen transport?
This is called the Bohr effect where a increase in pC02 which decrease the pH leads to a decreased affinity of hemoglobin to oxygen. This means that hemoglobin unloads oxygen in areas where pC02 is high e.g. active tissue and that the binding coefficient of hemoglobin is highest in the lung where pC02 is negligible.
Which mineral allows red blood cells to carry oxygen?
It is called hemoglobin. Hemoglobin carries oxygen and iron to the tissues.
Why is it easier for the fourth oxygen molecule to bind to hemoglobin?
It is not the fourth one specifically that binds easier, O2 is a positive allosteric effector (activator) of Haemoglobin and the binding of O2 facilitates further binding of O2. I'm not sure why this is though.
What is a protein that binds with oxygen molecules?
Hemoglobin binds with oxygen molecules. Hemoglobin is a protein molecule.
Where is the binding site for oxygen in the body?
Hemoglobin on red blood cells.
What portion of hemoglobin molecule binds oxygen?
Hemoglobin contains a heme group with an Iron ion attached to it. The iron is what binds to O2.
Why does the oxygen equilibrium curve of mammalian hemoglobin have a sigmoidal shape?
Because the binding of oxygen to hemoglobin is cooperative, i.e. it exhibits positive cooperativity. This essentially means that the binding of the first molecule of oxygen facilitates the binding of the second, and so on.
Why is hemoglobin an effective respiratory pigment?
The Bohr effect and cooperative binding of oxygen to hemoglobin is what makes it an effective carrier of oxygen from the lungs to the peripheral tissues. What is cooperative binding? The first oxygen bind less strongly to oxygen then does the subsequent oxygen molecules (hemoglobin has four binding zones for oxygen). This means that the binding curve is fairly steep. The Bohr effect is a negative effect on binding of oxygen by hemoglobin in the presence of increased pH. Since peripheral tissues release C02 it increases the local pH releasing the oxygen. After the first oxygen is released the remaining oxygen molecules are quickly disassociated from hemoglobin thus delivering the oxygen to the tissue in need of oxygen.
What effects oxygen binding to and dissociation from hemoglobin?
Ph and temperature
What oxygen-binding protein is found only in muscle fibers?
Hemoglobin
WHen hemoglobin binds its first oxygen molecule it is easier for other?
after one oxygen molecule binds to hemoglobin, it is easier for the other molecules to bind to the hemoglobin. this is known as cooperative binding.
What is the name for the process of one oxygen molecule binding to hemoglobin and others oxygen molecules follow?
saturation
How much oxygen is actually utilised by the muscles?
Look up a hemoglobin oxygen-binding curve, that will tell you.
What does BPG mean in hemoglobin?
BPG in hemoglobin means allosteric effector, that binds to the site that is completely remote from that active site for oxygen. The amount of BPG in red cells determines the oxygen affinity of hemoglobin.
Does a low pH decrease hemoglobins affinity for oxygen?
Yes. This an example of the Bohr effect. If pH is lower than normal (normal is 7.4), then hemoglobin does not bind oxygen as well. The higher the pH, the lower the H ion concentration, the lower the carbon dioxide level, and the GREATER affinity hemoglobin has for oxygen. The binding of oxygen to hemoglobin in the lungs is not affected by changing the pH.
How is seal hemoglobin different to human hemoglobin?
All hemoglobin has something called the Bohr effect, which is a negative effect of binding oxygen by hemoglobin in the presence of acid. This effect is some what exaggerated in diving mammals.
