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Why hemoglobin is better long distance oxygen transporter than myoglobin?
Wiki User
∙ 14y ago
Both Myoglobin and Haemoglobin binds to oxygen, but they differ in many aspects.
Usual site:
Myoglobin: muscle tissues
Haemoblogin: red blood cells (whole body)
Main function:
Myoglobin: stores oxygen (in muscle tissues)
Haemoglobin: Oxygenation of tissues (whole body)
Waste (CO2) collection (whole body)
gas exchange (lungs, tissues)
Oxygen carrying capacity:
Myoglobin: monomeric = one heme prosthetic group, one iron atom
Haemoglobin: tetrameric = four heme prosthetic groups, four iron atoms.
Structure
Myoglobin: secondary and tertiary, no allosteric interaction
Haemoglobin: quaternary structure, allosteric interaction, different affinity
Affinity to oxygen
Myoglobin: Oxidation (Fe2+ → Fe3+) prevents oxygen binding.
Haemoglobin: requirement specific affinity:
(gradually increasing in the lungs, . gradually decreasing at the tissues)
Prefered binding
Myoglobin: Carbon monoxide preferred to Oxygen.
Haemoglobin: Oxygen, carbon dioxide
While in cases of hugely increased demand, myoglobin releases oxygen for metabolism, but, in the long run haemoglobin is more suitable for the purpose.
Wiki User
∙ 14y ago
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It's better than 7
Why is carbon monoxide is harmful to us?
Carbon Monoxide mimics Oxygen gas in adhering to the hemoglobin of blood. In fact it does it better than Oxygen - out competes oxygen for the blood's attention. Unfortunately it also does it better than the ability of the cells to remove it. So it just sticks to the Hemoglobin making it inoperative.
Why do males need more physical activity than females?
Why do males tend to have better cardiorespiratory fitness than females
How does baby blood differ from adult blood?
fetal hemoglobin differs most from adult hemoglobin in that it is able to bind oxygen with greater affinity than the adult form, giving the developing fetus better access to oxygen from the mother's bloodstream.
Would it be inappropriate to measure the distance from Pluto to Earth in light-years?
Light years aren't the best, since it is only about 0.000624 light years away. Saying that the distance is 39 AU would be better. On the other hand, it's a much better unit than saying the distance is 3,229,510,630,000 fathoms.
One advantage hemoglobin has over myoglobin as a respiratory pigment is that?
Cooperative binding. Hemoglobin can load and unload oxygen better than myoglobin. So it is kore sensitive to changes in the environment, vs. Myoglobin
Does carbon monoxide bind to hemoglobin or oxygen better?
Carbon monoxide bind easily to hemoglobin.
Which is a better indicator for anemia hemoglobin or hematocrit?
hematocrit
What are the steps in making hemoglobin?
There are five steps in making a persons hemoglobin better. Some of the foods that will improve a persons hemoglobin are red meat, veggies, fruits, nuts, and breads.
What is the color of RBC's without hemoglobin?
The red blood cells don't loose hemoglobin. Hemoglobin is the protein the oxygen binds to. So I think a better question is " What is the colour of RBC's without oxygen?" And the answer in a dark red.
What does a hemoglobin level of 8 mean for a man?
It's better than 7
Why is the RBC without a nucleus?
just to accommodate more hemoglobin for better oxygen transport
What happens when hemoglobin is happens?
They will have a better oxygen transport in their blood, this is why endurance athletes use doping substances or high altitude training to increase their hemoglobin levels. The drawback of a high hemoglobin level is that your blood is more likely to form thrombosis and cause stroke or heart attacks.
Is carbon dioxide is more toxic than carbon monoxide?
it bonds to the hemoglobin in red cells better than oxygen does.
Why is carbon monoxide more toxic than carbon dioxide?
it bonds to the hemoglobin in red cells better than oxygen does.
Why nitrogen in air does not react with hemoglobin as it is present in greater percentage then oxygen?
Nitrogen gas is nearly an inert gas. Hemoglobin is optimized for bonding with oxygen, but bonds even better to carbon monoxide (which makes carbon monoxide such an effective poison).
Why is carbon monoxide is harmful to us?
Carbon Monoxide mimics Oxygen gas in adhering to the hemoglobin of blood. In fact it does it better than Oxygen - out competes oxygen for the blood's attention. Unfortunately it also does it better than the ability of the cells to remove it. So it just sticks to the Hemoglobin making it inoperative.
