00:01
So here we have been asked about the efficiency of transfer of oxygen by hemoglobin.
00:12
Now if we talk about hemoglobin, then this hemoglobin, which is abbreviated as hb, is an protein molecule and they are found in red blood cells.
00:35
They have four subunits among which two of them are alpha subunit and the other two are beta subunits.
00:43
These each type of subunits are surrounded by a haine group which contains iron.
01:06
And this iron then binds with oxygen molecule allowing each hemoglobin molecule to bind with four oxygen molecule.
01:22
Now these molecules with more oxygen bind to the hane group are brighter red.
01:28
So as a result, oxygenated arterial blood where the hemoglobin is carrying four oxygen molecules is bright red.
01:35
And these venous blood that is carrying deoxygenated blood, they are darker red.
01:41
Now if we talk about the proteins inside red blood cells, then they help to carry or they are carrier of oxygen...