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1.
Why does the air in the nasal cavity get warmed?
2.
Haemoglobin (Hb) is a
3.
The figure given below shows a small part of human lung where exchange of gas takes place. In which one of the options given below, the one part A, B, C or D is correctly identified along with its function.
4.
How many molecules of oxygen can bind to a molecule of haemoglobin?
5.
XX' is a part of respiratory system that contains C-shaped rings of hyaline cartilage. 'XX' is lined with ciliated, pseudostratified columnar epithelium. Identify 'XX'