Understanding Blood Composition and Functions

What are the main components of blood?

• Plasma, red blood cells, white blood cells, and platelets

• Plasma, red blood cells, and water

• Red blood cells, white blood cells, and oxygen

• Plasma, platelets, and carbon dioxide

What is the primary function of red blood cells?

• To fight infections

• To carry oxygen from the lungs to the rest of the body

• To help in blood clotting

• To transport nutrients

Which component of blood is responsible for clotting?

• Red blood cells

• White blood cells

• Platelets

• Plasma

What percentage of blood is made up of plasma?

• 25%

• 45%

• 55%

• 75%

Which of the following is NOT a function of blood?

• Transporting nutrients and oxygen

• Regulating body temperature

• Producing hormones

• Protecting against infections

What is the main component of blood plasma?

• Proteins

• Water

• Glucose

• Salts

What is the role of white blood cells?

• To carry carbon dioxide

• To fight infections and diseases

• To transport nutrients

• To help in blood clotting

Which of the following is a function of blood plasma?

• Carrying oxygen

• Transporting hormones and nutrients

• Clotting blood

• Producing red blood cells

What is the main role of red blood cells?

• The main role of red blood cells is to transport oxygen and carbon dioxide.
• To produce hormones for the body.
• To store nutrients and energy.
• To fight infections and diseases.

How does blood clot?

• Blood clots by dissolving all platelets in the bloodstream.

• Blood clots through oxygenation of red blood cells.
• Blood clots through a process involving platelet activation and fibrin formation.

• Blood clots only when exposed to air.