You are currently viewing 50 one-mark Questions and Answers on scientists Who made significant contributions.

50 one-mark Questions and Answers on scientists Who made significant contributions.

  1. Who is known as the father of modern genetics?
    • Gregor Mendel.
  2. Who discovered penicillin?
    • Alexander Fleming.
  3. Who proposed the theory of evolution by natural selection?
    • Charles Darwin.
  4. Who discovered the structure of DNA?
    • James Watson and Francis Crick.
  5. Who developed the first successful polio vaccine?
    • Jonas Salk.
  6. Who discovered the circulation of blood in the human body?
    • William Harvey.
  7. Who developed the first rabies vaccine?
    • Louis Pasteur.
  8. Who discovered the role of insulin in diabetes?
    • Frederick Banting and Charles Best.
  9. Who discovered the existence of blood groups?
    • Karl Landsteiner.
  10. Who is considered the father of microbiology?
    • Antonie van Leeuwenhoek.
  11. Who discovered the function of neurons in the nervous system?
    • Santiago Ramón y Cajal.
  12. Who proposed the germ theory of disease?
    • Louis Pasteur and Robert Koch.
  13. Who discovered the concept of chemotherapy?
    • Paul Ehrlich.
  14. Who developed the first successful smallpox vaccine?
    • Edward Jenner.
  15. Who discovered the structure of the atom?
    • Ernest Rutherford.
  16. Who discovered the role of enzymes in fermentation?
    • Eduard Buchner.
  17. Who proposed the endosymbiotic theory?
    • Lynn Margulis.
  18. Who discovered the mechanism of action potentials in neurons?
    • Alan Hodgkin and Andrew Huxley.
  19. Who developed the first successful organ transplant?
    • Joseph Murray.
  20. Who discovered the existence of hormones?
    • Ernest Starling and William Bayliss.
  21. Who proposed the double-helix structure of DNA?
    • Rosalind Franklin (contributed to its discovery).
  22. Who discovered the role of bacteria in causing stomach ulcers?
    • Barry Marshall and Robin Warren.
  23. Who discovered the structure of insulin?
    • Dorothy Hodgkin.
  24. Who discovered the concept of phagocytosis?
    • Ilya Metchnikoff.
  25. Who discovered the structure of the neuron?
    • Camillo Golgi.
  26. Who discovered the role of X-rays in medical imaging?
    • Wilhelm Röntgen.
  27. Who discovered the structure of the cell membrane?
    • Singer and Nicolson.
  28. Who developed the first successful chemotherapy for cancer?
    • Gertrude Belle Elion and George Hitchings.
  29. Who discovered the role of histamines in allergic reactions?
    • Sir Henry Dale.
  30. Who discovered the role of platelets in blood clotting?
    • William Osler.
  31. Who discovered the role of adrenaline in the body’s response to stress?
    • Walter Cannon.
  32. Who discovered the first antibiotic, sulfa drugs?
    • Gerhard Domagk.
  33. Who developed the first successful heart transplant?
    • Christiaan Barnard.
  34. Who discovered the role of nitric oxide as a signaling molecule in the cardiovascular system?
    • Robert F. Furchgott, Louis J. Ignarro, and Ferid Murad.
  35. Who discovered the structure of the ribosome?
    • Ada Yonath.
  36. Who discovered the role of prions in causing neurodegenerative diseases?
    • Stanley B. Prusiner.
  37. Who discovered the role of telomeres in cellular aging?
    • Elizabeth Blackburn, Carol Greider, and Jack Szostak.
  38. Who discovered the role of vitamin C in preventing scurvy?
    • James Lind.
  39. Who discovered the role of cholesterol in heart disease?
    • Michael Brown and Joseph Goldstein.
  40. Who discovered the first effective treatment for HIV/AIDS?
    • Baruch Blumberg and Anthony Fauci (contributed to its development).
  41. Who discovered the structure of the rhinovirus (common cold virus)?
    • Stephen Harrison.
  42. Who discovered the role of interferons in the immune response?
    • Alick Isaacs and Jean Lindenmann.
  43. Who discovered the role of cytokines in regulating immune responses?
    • Lloyd J. Old.
  44. Who discovered the mechanism of action of aspirin as a blood thinner?
    • John Vane.
  45. Who discovered the structure of the influenza virus?
    • David Baltimore.
  46. Who discovered the role of nitric oxide as a neurotransmitter?
    • Solomon Snyder.
  47. Who discovered the structure of the enzyme lysozyme?
    • Alexander Fleming.
  48. Who discovered the role of stem cells in tissue regeneration?
    • Ernest A. McCulloch and James E. Till.
  49. Who discovered the role of COX-2 inhibitors in reducing inflammation?
    • Philip Needleman.
  50. Who discovered the role of the hypothalamus in regulating body temperature?
    • Bernard Brodie and Julius Axelrod.

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