Blood

1. What are the two major components of blood?

• Water and protein

• Plasma and blood cells

• Red blood cells and white blood cells

• Platelets and plasma

How many liters of blood does an average adult human have

• 1-2 liters

• 2-3 liters

• 4-6 liters

• 7-9 liters

Which type of blood cell is responsible for fighting infection?

• Red blood cells

• White blood cells

• Platelets

• Lymphocytes

What is the primary function of red blood cells?

• Fighting infection

• Blood clotting

• Transporting oxygen and carbon dioxide

• Producing antibodies

Which component of blood helps the blood to clot?

• Plasma

• White blood cells

• Platelets

• Hemoglobin

Which blood cell lacks a nucleus and has a biconcave shape?

• White blood cell

• Platelet

• Red blood cell

• Lymphocyte

What protein in red blood cells binds to oxygen?

• Fibrinogen

• Albumin

• • Hemoglobin

• Trombokinase

Why is blood clotting necessary?

• To prevent serious blood loss

• To increase blood pressure

• • To fight infection

• To transport oxygen

What substance is converted into Fibrin to form a blood clot?

• Protrombin

• Trombokinase

• Fibrinogen

• Calcium

Which blood group has both A and B antigens on the surface of its red blood cells?

• Group A

• Group B

• Group AB

• Group O