What is the color of human blood due to?

Which component of blood helps in clotting?

What percentage of blood is made up of plasma?

Which blood cells are responsible for carrying oxygen?

What is the normal pH of human blood?

Which blood group is known as the universal donor?

Which blood group is known as the universal recipient?

Which protein in blood helps fight infections?

Where are red blood cells produced?

Which blood component transports nutrients and hormones?

What is the lifespan of a red blood cell?

Which blood cells help in body defense?

Which mineral is essential for hemoglobin formation?

Which condition is caused by low hemoglobin?

Which organ removes old and damaged RBCs?