haemoglobin is a :

The greatest affinity for haemoglobin is shown by

How much haemoglobin is present in blood of healthy individual?

These questions consist of two statements each,printed as Assertion and Reason.While answering these questions you are required to choose any one of the following four responses. Assertion:Oxygen dissociation curve of haemoglobin is sigmoid. Reason:Oxygen dissociation curve moves toward left side with increase in CO_2 concentration in the air.

Haemoglobin of a human foetus:

Differentiate carbomino haemoglobin and oxyhaemoglobin.