Blood

What is the main function of blood in our body?

• To clean the body

• To transport oxygen and nutrients

• To digest food

• To protect the skin

What is the red colored part of the blood called?

• Platelets

• White blood cells

• Red blood cells

• Plasma

What gives blood its red color?

• Hemoglobin

• Oxygen

• Carbon dioxide

• Plasma

What is the liquid part of blood called?

• Red blood cells

• White blood cells

• Platelets

• Plasma

Which cells in blood help fight infections?

• Red blood cells

• White blood cells

• Platelets

• Plasma

What is the main role of hemoglobin in red blood cells?

• To fight infections

• To carry oxygen

• To make blood clot

• To clean the body

What is the average amount of blood in an adult human body?

• 1 liter

• 5 liters

• 10 liters

• 15 liters

Which type of blood cells are the most numerous?

• Red blood cells

• White blood cells

• Platelets

• Plasma

What is the main organ that pumps blood?

• Brain

• Heart

• Liver

• Stomach

Which of the following is not a component of blood?

• Plasma

• Red blood cells

• Nerves

• Platelets