platelets and RBC's

What is the primary function of red blood cells?

• Fighting infections

• Transporting oxygen

• Clotting blood

• Regulating body temperature

Which molecule in red blood cells binds to oxygen?

• Fibrin

• Albumin

• Hemoglobin

• Thrombin

What is the shape of a typical red blood cell?

• Spherical

• Cuboidal

• Circular, Biconcave

• Cylindrical

What causes blood to start clotting?

• Presence of antibodies

• A cut on the skin

• Increased oxygen levels

• Low blood pressure

What enzyme do platelets release to start the clotting process?

• Haemoglobin

• Thrombin

• Fibrinogen

• Plasma

What is the role of fibrin in blood clotting?

• Transporting oxygen

• Forming a meshwork by entangling with red blood cells

• Binding to microorganisms

• Regulating blood flow

What happens to fibrinogen during blood clotting?

• It is broken down

• It is converted to fibrin

• It is released from red blood cells

• It absorbs oxygen

Which factor directly increases the amount of oxygen that red blood cells can carry?

• Shape of the red blood cells

• Size of the red blood cells

• Amount of haemoglobin in the red blood cells

• Number of platelets in the blood