PREVIOUSLY ASKED IN:
WBPSC Miscellaneous Preliminary 2023
Answer
Karl Landsteiner
Explanation
The ABO human blood group system was discovered in 1901 by the Austrian biologist and physician Karl Landsteiner. His groundbreaking classification of blood into groups (A, B, AB, and O) made blood transfusions safe and routine, saving countless lives. He was awarded the Nobel Prize in Physiology or Medicine in 1930 for this discovery.
Key Points
- > Discovered in the year 1901.
- > The main blood groups are A, B, AB, and O.
- > Group 'O' (specifically O negative) is the Universal Donor.
- > Group 'AB' (specifically AB positive) is the Universal Recipient.
- > William Harvey discovered the circulation of blood in the human body.
- > Louis Pasteur invented the rabies vaccine and pasteurization.
- > Alexander Fleming discovered Penicillin (antibiotic).
Additional Information
Landmark Biological Discoveries
| Discovery | Scientist | Year |
|---|---|---|
| Blood Groups | Karl Landsteiner | 1901 |
| Blood Circulation | William Harvey | 1628 |
| Penicillin | Alexander Fleming | 1928 |
| Rabies Vaccine | Louis Pasteur | 1885 |
Memory Tips
- Remember the difference: Harvey figured out how blood moves (Circulation), but Landsteiner figured out what kind of blood it is (Groups).