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Who Discovered Ribosomes

 Who Discovered Ribosomes
Known as complexes of protein and RNA present in cells that have nuclei, ribosomes are important to the process in the genetic code expression called translation. These RNA complexes are responsible for messenger RNA (also known as mRNA) binding. Aside from this, it is also important to make the appropriate amino acids sequence. To know more about the functions and characteristics of the protein complexes, it is best if we start with learning the truth behind the discovery of ribosomes. Historical Background Who discovered ribosomes? The RNA complexes were observed and discovered by cell biologist from Rome George Palade in the mid-1950s with the use of a high-powered electron microscope. Because of his discovery, Palade received the Nobel Prize. However, the name was given in 1958 by scientist Richard B. Roberts. Palade identified ribosomes when he and collaborator Philip Siekevit analyzed the molecules that are connected to the endoplasmic reticulum in 1955. The two scientists found that...

Who Discovered Mitochondria

 Who Discovered Mitochondria
It is difficult to give one specific individual the credit for who discovered mitochondria. The entire course of development from the initial sighting to the eventual classification of the so-called power plant of the cell had a slow but steady progress, spanning over a century of research conducted by a succession of brilliant scientific minds. The history of mitochondria’s discovery began in 1857, when Swiss anatomist and physiologist Albert von Kolliker revealed the presence of granule-like structures in muscle cells. Kolliker’s claim was substantiated by other scientists at the time who had observed that the granules also appeared in other cell types. Then in 1886, a cytologist named Richard Altman employed a dye technique to identify the granules. Terming them “bioblasts,” Altman hypothesized that these organelles were the basic units of cell activity. It would be in 1898 that Carl Benda would rename the bioblast as “mitochondria,” taken from the Greek words “mitos”...

Who Discovered Sodium?

Who Discovered Sodium?
Known as a highly reactive, silvery-white and soft metal, sodium goes by the atomic number 11 and the symbol Na. This metallic element belongs to a group of alkali metals, which also includes rubidium (Rb), potassium (K) and lithium (Li). This is a very important element because it plays a very huge role in the life of plant species and animals. Aside from these things, it is nice to know other relevant details about this highly essential element such as who discovered sodium. The Discovery of Sodium Who discovered sodium? In 1806, British chemist Humphry Davy discovered elemental sodium after he passed electric current through a molten form of sodium hydroxide. Although it does not appear on Earth naturally, this element reacts violently with water oxidizes right away in air. It can only be stored with the aid of an inert medium. In addition to his wonderful contributions to the discoveries of various alkaline earth metals, Davy also contributed a lot in the discoveries of iodine as well...

Who Discovered Zinc?

Who Discovered Zinc?
Zinc (also identified as spelter) is considered as one of the plentiful elements in the crust of the Earth. Some countries like the United States, Canada and Australia are fortunate to have abundant sources of the element. In order to produce the element, there are process that should be done such as roasting, froth floatation and extraction. This element has various applications in different industries including the wood industry. Before we proceed with the different uses of the metal, it is important to start with the history of zinc. Historical Background Who discovered zinc? According to records, German scientist Andreas Margraf discovered the element in 1746. Even if Margraf was recognized for the discovery of the element, many historians agree that the element was already used by ancient people. One of the evidences that the element was used in early societies is the prehistoric statuette that was recovered in Transylvania, which was made from 87.5 per cent zinc. Aside from this,...

Who Discovered Melanoma?

Who Discovered Melanoma?
A type of skin cancer, melanoma is a medical condition marked by a malignant tumor of melanocytes. Aside from the skin, this disease also affects other important body parts, namely the eye and the bowel. It is one of the deadliest types of cancer, affecting almost 160,000 individuals each year in the United States alone. The World Health Organization reported that melanoma causes approximately 48,000 deaths annually all throughout the world. Aside from these interesting facts, it is also good to know certain things about the history of this disease including who discovered melanoma. The Discovery of Melanoma Who discovered melanoma? As a disease, a French physician named Rene Laennac first described melanoma. He reported it in 1804 as part of the Faculte de Medecine de Paris lecture that was held in France. He then published it in 1806 as a bulletin. In 1820, an English general practitioner named William Norris reported melanoma for the very first time in English. One of his notable works...