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Zacharias Janssen
A) He was the first person to invent the compound microscope. It is also known that he worked alongside his father, Hans Janssen, in order to create the microscope. He allowed people to see things in greater detail and in magnification.
B) It was built in 1595.
D) One interesting fact is that his microscope was not constructed like the microscopes we use today. It had a brass tube with lenses on each end, and a disc. Another fact is that the microscope was made in Holland. -
Marcello Malpighi
A) He used the microscrope that Zacharias Janssen created in order to see capabillaries in the blood of a fish's tail. The fish was living. He was able to conclude that blood is able to circulate all over the body in living things.
B) He found this out in 1660.
D) One fact is that he was a part of a group that performed dissections and vivisections. Another fact is that he was the first to create the science field of microscopy. -
Robert Hooke
A) He was the first person to actually discover a cell. He had examined a piece of cork with a light microscope and saw "little boxes", which were the pores/cells he discovered. This started the entire research on cells.
B) He discovered the cells in 1665.
D) One fact is that he published a book about biology called Micrographia: or Some Physiological Descriptions of Miniature Bodies Made by Magnifying Glass. Another fact is that he accepted a task of exploring with microscopical studies. -
Anton van Leeuwenhoek
A) He created many microscopes and used them to look at living cells. He was able to describe mircroorganisms, which had never been looked at before. He found the genus Spirogyra and the genus Vorticella. These are known today as protists.
B) He described these protists in 1673.
D) One fact is that he called the protists animalcules at first.
Another fact is that he made over 500 microscopes in his lifetime. -
Matthias Schleiden
A) He was able to prove that all plants contained the basic content of function, the cell. He also generalized that plants grew from the formation of new cells.
B) He stated this in 1838.
D) One fact is that he attended Heidelberg to study law, but he ended up leaving in order to study botany. Another fact is that he also came up with the idea that embryonic plants result from only one cell. -
Theodor Schwann
A) Only one year from Matthias Schleiden concluding all plants contained cells, he was able to say the same about animals. He proved that all animals were made up of cells.
B) He concluded this in 1839.
D) He also discovered pepsin, which is contained in animals and supports their digestion. Another fact is that he was a professor of physiology and anatomy at different colleges. -
Louis Pasteur
A) He worked with bacteria because he was involved with everyday concerns with cells. Bacteria are single-celled and caused diseases in people when they consumed spoiled foods. He developed a a process called fermentation to kill the bacteria in those foods.
B) He started getting involved with this in 1849.
D) One fact is that he was the first to show that cells came from other cells and nothing else. Another fact is that he also proved that germs are able to multiply in bodies. -
Rudolf Virchow
A) He specialized in disease and he realized that the entire organism cannot get sick. Only a group of cells within the organism can get the disease. He also researched into the idea that changes occur in the cells with a disease.
B) This occured in 1855.
D) One fact is that he was a doctor and was the first person to discover the disease of leukemia. Another fact is that he worked with the idea that diseases could go from animals and humans in zoonosis.
