Question

Blood is a ________.

Answer 1

Blood is a suspension.

In a suspension, solute-like particles of a substance are blended with a solvent-like fluid but are not dissolved. Blood is a suspension of blood cells and platelets. It contains large particles large enough ( to settle) for sedimentation.

Erythrocytes are cells that transport oxygen from the lungs to the body It also removes and transports carbon dioxide from body tissues to the lungs. The average adult has approximately 5million cells/ul. Its production is  controlled by erythropoietin. Erythropoietin is produced by the kidneys.