Question

please give correct answer!!!!!!!

Answer 1

a) human blood is red because of the presence of 'haemoglobin' in it.

Answer 2

(A) Each hemoglobin protein is made up subunits called hemes, which are           what give blood its red color. More specifically, the hemes can bind iron molecules, and these iron molecules bind oxygen. The blood cells are red because of the interaction between iron and oxygen.

(B) The upward and downward movement of diaphragm occurs consecutively during inspiration process. ... Apart from that, the diaphragm can contracts as well as pulls downward when your muscles actually between ribs contract while pulling upward.

(d) A universal blood donor is someone whose blood type is O negative. ... Individuals with the blood group O Rh negative are called “universal donors” because their red blood cells can be transfused to people of all bloo