AQA - Biology - Blood and Blood vessels

Which type of blood vessel has thick, muscular walls to withstand high pressure?

• Veins

• Arteries

• Capillaries

• Venules

What is the primary function of red blood cells?

• To fight infections

• To transport oxygen

• To clot blood

• To regulate body temperature

Which component of blood is responsible for clotting?

• Red blood cells

• White blood cells

• Platelets

• Plasma

What is the main function of white blood cells?

• To transport nutrients

• To fight infections

• To carry oxygen

• To remove waste products

Which blood vessel carries blood away from the heart?

• Veins

• Arteries

• Capillaries

• Venules

What is the liquid component of blood called?

• Plasma

• Platelets

• Red blood cells

• White blood cells

During the blood clotting process, which protein is converted into fibrin to form a clot?

• Haemoglobin

• Thrombin

• Fibrinogen

• Albumin

Which type of blood vessel has valves to prevent backflow of blood?

• Arteries

• Veins

• Capillaries

• Arterioles