A red pigment that plays a very important role in transport of oxygen from lungs to cells and carbon dioxide from cells to lungs, is ______________.
A. red blood cells
B. xanthophyll
C. myoglobin
D. haemoglobin
Answer:A
A red pigment that plays a very important role in transport of oxygen from lungs to cells and carbon dioxide from cells to lungs, is ______________.
A. red blood cells B. xanthophyll C. myoglobin D. haemoglobin