Blood is an indispensable part of our body as it is responsible for carrying oxygen and nutrients to the cells. But have you ever wondered what makes up this red fluid? Learn some interesting facts with the following 39 trivia blood quiz questions and answers.
Blood Quiz Questions and Answers
1. On average, the body of an adult contains how many litres of blood?
A. 5 litres
B. 7 litres
C. 9 litres
2. In a blood-pressure reading, the number represents units of which component in the body?
A. Iron
B. Mercury
C. Iodine
3. On average, blood makes up approximately … per cent of the body weight?
A. 2 to 3
B. 7 to 8
C. 11 to 12
4. How long does a red blood cell typically exist in the bloodstream?
A. 120 days
B. 2 year
C. Forever
5. People with which blood type might have a greater risk of memory loss as they get aged?
A. A
B. B
C. AB
6. What is haemoglobin?
A. A molecule holding and carrying oxygen to body cells
B. A chemical stimulating the generation of red blood cells
C. A molecule holding and removing waste products from the body
7. In which year was the first blood transfusion performed?
A. 1500s
B. 1600s
C. 1700s
8. What does a hematocrit mean?
A. The measure of red blood cells
B. A hormone stimulating the generation of red blood cells
C. The nucleus of red blood cells
9. How does blood have its red colour?
A. From proteins in the bone marrow
B. From the blood’s waste products
C. From the irons in haemoglobin
10. What is the role of white blood cells?
A. Carry oxygen and nutrients
B. Fight infection
C. Create clots
11. When the number of white blood cells increases in the body, what does it mean?
A. There is an infection in the body
B. The body has just finished eliminating an infection
C. The blood lacks oxygen
12. White blood cells are typically divided into 6 main types. Which is the most common type?
A. Lymphocytes
B. Basophils
C. Neutrophils
13. What are the 2 components that make up human blood?
A. Plasma and cells
B. Water and protein
C. White blood cells and red blood cells
14. Which component is the majority part of plasma?
A. Protein
B. Water
C. Electrolytes
15. What is your blood type if you are can donate to everyone?
A. B
B. AB
C. O
16. What is the role of platelets in the blood?
A. Form clots
B. Fight infections
C. Carry oxygen and nutrients
17. How often can a person donate blood?
A. Every week
B. Every month
C. Every two months
18. Which part of the body is responsible for producing blood cells?
A. Heart
B. Bone marrow
C. Blood vessels
19. What does hematopoiesis mean?
A. The production of blood
B. Low blood pressure
C. Blood clot
20. Which of the following components of blood are responsible for removing carbon dioxide from the body?
A. Red blood cells
B. White blood cells
C. Platelets
21. When plasma gets clotted, what is the leftover fluid called?
A. Venom
B. Water
C. Serum
22. Both B and A antigens can be found in which type of blood?
A. B
B. O
C. AB
23. What does apheresis mean?
A. The transferring of blood from donors to recipients
B. The separation of blood’s components
C. The preserving of donated blood
24. Which percentage do red blood cells generally make up of components in blood?
A. 45 per cent
B. 60 per cent
C. 90 per cent
25. Which of the following devices is used to measure blood pressure?
A. A sphygmomanometer
B. A stethoscope
C. A phonendoscope
26. Which element in the blood is also called erythrocyte?
A. Platelet
B. White blood cell
C. Red blood cell
27. When your body is attacked by bacteria and viruses, which of the following components are likely to increase in quantity?
A. Thrombocytes
B. Leukocytes
C. Erythrocytes
28. Which of the following health issues is associated with a low level of iron in blood?
A. Anaemia
B. Hypoxia
C. Low blood pressure
29. Which pigment in the blood causes a yellow colour in bruises?
A. Biliverdin
B. Bilirubin
C. Hematocrit
30. All proteins of the blood are produced by which body part?
A. Kidney
B. Bone
C. Liver
31. Which substance in the blood that is responsible for fighting foreign materials?
A. Antigens
B. Agglutinins
C. Agglutinogens
32. When a blood vessel is damaged, which hormone is needed to reduce the loss of blood by constricting blood vessels?
A. Serotonin
B. Thromboplastin
C. Thrombin
33. What is the colour of blood plasma?
A. Red
B. Yellow
C. Pink
34. Which blood type(s) can be donated to people with blood type A?
A. A and AB
B. A and O
C. B and O
35. Which system in the body is responsible for carrying blood to different parts?
A. Nervous system
B. Respiratory system
C. Circulatory system
36. Where in the body does blood pick up nutrients and transport to other parts?
A. Small intestine
B. Stomach
C. Liver
37. What is the main protein in blood plasma?
A. Tubulin
B. Albumin
C. Actin
38. Which type of cancer affects blood cells?
A. Leukemia
B. Melanoma
C. Heart cancer
39. What is the most abundant type of blood cells?
A. Platelets
B. White blood cells
C. Red blood cells
How do you think about these questions? We hope you learn more useful knowledge about blood and body. If you still have time, take a look at this Periodic Table trivia, the first aid quiz, or this quiz on Indian history.
