1. Who performed the world’s first successful human heart transplant in 1967?
(A) Christiaan Barnard
(B) Joseph Murray
(C) Alexis Carrel
(D) Thomas Starzl
2. Which organ was the first to be successfully transplanted in humans?
(A) Heart
(B) Liver
(C) Kidney
(D) Lung
3. In which year was the first successful human kidney transplant performed?
(A) 1945
(B) 1954
(C) 1962
(D) 1973
4. What is the biggest challenge in organ transplantation?
(A) Blood type matching
(B) Surgical errors
(C) High cost
(D) Organ rejection
5. What is the main function of immunosuppressive drugs in organ transplant recipients?
(A) Increase blood flow
(B) Prevent infection
(C) Prevent organ rejection
(D) Accelerate healing
6. Which organ transplant is considered the most complex and risky?
(A) Heart
(B) Liver
(C) Lung
(D) Intestine
7. What is the most commonly transplanted organ worldwide?
(A) Liver
(B) Kidney
(C) Heart
(D) Lung
8. Which country leads in the number of organ transplants performed annually?
(A) UK
(B) India
(C) China
(D) USA
9. What does the term "xenotransplantation" refer to?
(A) Using artificial organs
(B) Transplant between identical twins
(C) Transplant from animals to humans
(D) Transplant from cadavers
10. Which animal organ was successfully transplanted into a human in a historic 2022 experiment?
(A) Pig heart
(B) Cow kidney
(C) Goat liver
(D) Rabbit lung
11. What is 3D bioprinting primarily used for in medicine?
(A) Printing CT scans
(B) Printing medications
(C) Creating tissue and organs
(D) Making artificial bones
12. Which bio-ink component is essential for 3D bioprinting?
(A) Plastic polymers
(B) Human cells
(C) Metal powders
(D) Carbon fiber
13. What is the major advantage of bioprinting organs?
(A) Reduces waiting time for donors
(B) Cheaper than surgery
(C) Improves fitness
(D) Eliminates need for anesthesia
14. What is a scaffold in bioprinting?
(A) A surgical tool
(B) A support structure for tissue growth
(C) A chemical solution
(D) A storage system
15. Which organ is considered the most promising candidate for 3D bioprinting in the near future?
(A) Heart
(B) Pancreas
(C) Brain
(D) Skin
16. What is "tissue engineering"?
(A) Using computers in surgery
(B) Engineering bones only
(C) Combining cells with materials to form functional tissues
(D) Programming medical devices
17. What type of cells are typically used in bioprinting?
(A) Muscle cells only
(B) Stem cells
(C) Fat cells
(D) Blood cells only
18. Which technology is most commonly used in bioprinting?
(A) Laser etching
(B) Inkjet printing
(C) Stereolithography
(D) Microextrusion
19. What is the main limitation of current bioprinting technology?
(A) Speed
(B) Cost
(C) Vascularization of tissues
(D) Licensing
20. Which of the following is a company involved in 3D bioprinting?
(A) Organovo
(B) Moderna
(C) AstraZeneca
(D) BioNTech
21. What ethical concern is most associated with organ transplants?
(A) Overuse of anesthesia
(B) Organ trafficking
(C) Radiation exposure
(D) Age limits
22. What body system is most affected by organ rejection?
(A) Nervous system
(B) Endocrine system
(C) Digestive system
(D) Immune system
23. Which part of the organ donor process ensures recipient compatibility?
(A) CT Scan
(B) DNA sequencing
(C) HLA typing
(D) ECG test
24. Which term describes using a patient’s own cells to grow a new organ?
(A) Xenotransplant
(B) Autologous transplant
(C) Donor cloning
(D) Retroprinting
25. Which country banned commercial organ trade in 2007?
(A) India
(B) Brazil
(C) USA
(D) China
26. Which printing method is NOT used in bioprinting?
(A) Inkjet
(B) Laser-assisted
(C) Dot-matrix
(D) Extrusion
27. What is the source of most organ transplants?
(A) Brain-dead donors
(B) Living animals
(C) Robots
(D) Artificial organs
28. Which organ can regenerate and is often transplanted in part?
(A) Kidney
(B) Lung
(C) Heart
(D) Liver
29. What is the global initiative promoting ethical organ donation called?
(A) WHO Donor Code
(B) Istanbul Declaration
(C) Geneva Protocol
(D) Red Cross Act
30. Which breakthrough allowed longer preservation of transplant organs?
(A) Hypothermic machine perfusion
(B) CRISPR
(C) MRI
(D) Bio-scaffolds
31. What is the purpose of CRISPR in organ transplantation?
(A) Create bioinks
(B) Gene editing to reduce rejection
(C) Build surgical tools
(D) Sterilize donor organs
32. Which organ is most commonly transplanted from living donors?
(A) Kidney
(B) Heart
(C) Lung
(D) Pancreas
33. Which major bioprinting challenge involves connecting tissue to blood vessels?
(A) Integration
(B) Vascularization
(C) Flexibility
(D) Durability
34. Which advancement could reduce transplant rejection significantly?
(A) Nanobots
(B) Oxygen therapy
(C) Artificial valves
(D) Immuno-matching AI
35. Which organ transplant has the shortest average survival time post-surgery?
(A) Liver
(B) Kidney
(C) Lung
(D) Heart
36. What is bioartificial liver used for?
(A) Permanent replacement
(B) Temporary support before transplant
(C) Weight loss
(D) Detoxifying alcohol
37. Which country recently approved the use of pig kidneys for trials in humans (2024)?
(A) USA
(B) Germany
(C) Japan
(D) South Korea
38. How long can a human heart survive outside the body before transplant?
(A) 12–14 hours
(B) 4–6 hours
(C) 18–20 hours
(D) 24–30 hours
39. What is the goal of regenerative medicine?
(A) Grow organs and tissues
(B) Reduce cancer rates
(C) Improve surgery techniques
(D) Strengthen bones
40. What is a synthetic organ made entirely by machines and materials called?
(A) Hybrid organ
(B) Clone organ
(C) Artificial organ
(D) Bioenhancer
41. Which organ transplant can be performed from both living and deceased donors?
(A) Heart
(B) Kidney
(C) Lung
(D) Pancreas
42. What material is commonly used in 3D bioprinting scaffolds?
(A) Titanium
(B) Cement
(C) Plastic
(D) Hydrogel
43. What was the first organ grown in a lab and implanted in humans?
(A) Trachea
(B) Liver
(C) Pancreas
(D) Kidney
44. How are donor organs typically transported?
(A) In dry ice
(B) In temperature-controlled coolers
(C) By drones
(D) In saline spray
45. What is the average waiting time for a kidney transplant in many countries?
(A) 1–2 weeks
(B) 2–3 months
(C) 3–5 years
(D) 6–8 years
46. Which organization regulates organ donation and transplantation in the USA?
(A) FDA
(B) CDC
(C) UNOS
(D) NIH
47. Which technique is used to sterilize bioprinted organs before implantation?
(A) Freezing
(B) UV light
(C) Autoclaving
(D) Laser treatment
48. What is the role of bioreactors in tissue engineering?
(A) Grow and mature tissues
(B) Transport cells
(C) Perform surgery
(D) Measure organ function
49. What does “decellularization” refer to in bioengineering?
(A) Cell mutation
(B) Removing cells from an organ
(C) Destroying DNA
(D) Creating cell copies
50. Which organ transplant is often used to treat type 1 diabetes?
(A) Liver
(B) Kidney
(C) Pancreas
(D) Lung