Question { 8426 }

how bpg acts as a haemoglobin regulator?

Answer

BPG also known as 2,3 diphosphoglyceratye binds to
haemoglobin by lowering the o2 affinity of haemoglobin.
in the absence of BPG the p50 of haemoglobin is 1 torr in
its presence p50 becomes 26 torrs.
BPG lowers the o2 affinity of haemoglobin by a factor of 26
which is estimated in enabling haemoglobin to unload o2 in
tissue capillaries.
BPG reduces the o2 affinity of hb by binding in the
central cavity of deoxy haemoglobin and not to oxygenated form.

Question { 16472 }

what is racemic mixture and what is racemisation?

Answer

When equal amounts of extro rotatory and levorotatory
isomers are present the resulting mixture becomes optically
inactive because the optical activities of each isomer
cancel each other.such a mixture is called a racemic or dl
mixture or conglomerate mixture and this process of
converting an optically active compound into racemic
modification is known as RACEMISATION.