Biology Discoveries — Set 6

Correct Answer: B. Edward Jenner

Edward Jenner is widely considered the 'Father of Immunology' for his pioneering work on the smallpox vaccine. In 1796, he observed that milkmaids who had cowpox were immune to smallpox. This led to the development of the first successful vaccination method.

Correct Answer: C. Robert Hooke

Robert Hooke discovered cells while examining a thin slice of cork under a primitive microscope. He coined the term 'cell' because the structures looked like the small rooms (cells) in a monastery. This observation marked the beginning of cell biology.

Correct Answer: A. Gregor Mendel

Gregor Mendel is known as the Father of Genetics due to his systematic study of heredity in pea plants. He discovered the basic laws of inheritance, which explain how traits are passed between generations. His work formed the foundation of modern genetics.

Correct Answer: C. Watson and Crick

James Watson and Francis Crick discovered the double helix structure of DNA in 1953. This discovery explained how genetic information is copied and passed to new cells. They were awarded the Nobel Prize for this monumental achievement in 1962.

Correct Answer: D. William Harvey

William Harvey was the first to accurately describe the systemic circulation and properties of blood being pumped by the heart. Before him, it was believed that the liver produced blood and it was consumed by the body. This is a fundamental fact in human physiology.

Correct Answer: C. Alexander Fleming

Alexander Fleming discovered penicillin in 1928, marking the start of the antibiotic era in medicine. He noticed that a specific mold prevented the growth of bacteria in his laboratory. This discovery has saved countless lives from bacterial infections.

Correct Answer: B. Robert Brown

Robert Brown discovered the nucleus in plant cells in 1831, identifying it as a crucial part of the cell. This finding helped subsequent scientists develop the full 'Cell Theory'. The nucleus is now known to contain most of the cell's genetic material.

Correct Answer: B. Robert Koch

Robert Koch isolated the specific bacteria responsible for tuberculosis and cholera, proving the germ theory. He established 'Koch's Postulates', which are still used today to identify the cause of infectious diseases. He is a pioneer in modern bacteriology.

Correct Answer: A. Karl Landsteiner

Karl Landsteiner discovered the ABO blood group system in 1901, which made safe blood transfusions possible. He also later helped discover the Rh factor in blood. This discovery is a cornerstone of modern clinical medicine and hematology.

Correct Answer: B. Louis Pasteur

Louis Pasteur developed pasteurization to prevent wine and milk from souring by heating them to kill specific microbes. He also created vaccines for rabies and anthrax, saving many lives. He is often hailed as one of the founders of medical microbiology.