Citizendia
Your Ad Here

Christian René de Duve (born October 2, 1917) is an internationally acclaimed cytologist and biochemist. Events 1187 - Siege of Jerusalem: Saladin captures Jerusalem after 88 years of Crusader rule Year 1917 ( MCMXVII) was a Common year starting on Monday (link will display the full calendar of the Gregorian calendar (or a Common year See also List of basic cell biology topics. Cell biology (also called cellular biology or formerly cytology, from the Typical biochemists study chemical processes and chemical transformations in living organisms De Duve was born in Thames-Ditton, Britain, as a son of Belgian immigrants. The United Kingdom of Great Britain and Ireland was the formal name of the United Kingdom from 1 January 1801 until 12 April 1927 The Kingdom of Belgium is a Country in northwest Europe. It is a founding member of the European Union and hosts its headquarters as well as those They returned to Belgium in 1920. Year 1920 ( MCMXX) was a Leap year starting on Thursday (link will display 1920 of the Gregorian calendar De Duve was educated by the Jesuits at Onze-Lieve-Vrouwecollege in Antwerp, before studying at the Catholic University of Leuven, where he became a professor in 1947. The Society of Jesus ( Latin: Societas Iesu, SJ and SI or SJ, SI) is a Catholic religious order ||-||-||-||} Antwerp ( Dutch:, French: Anvers) is a City and Municipality in Belgium and the capital of the The Catholic University of Leuven, or Louvain, was the largest oldest and most prominent university in Belgium. The meaning of the word professor ( Latin: professor, person who professes to be an expert in some art or science teacher of highest rank) varies Year 1947 ( MCMXLVII) was a Common year starting on Wednesday (link will display full 1947 calendar of the Gregorian calendar. He specialized in subcellular biochemistry and cell biology and discovered peroxisomes and lysosomes, cell organelles. Biochemistry is the study of the chemical processes in living Organisms It deals with the Structure and function of cellular components such as See also List of basic cell biology topics. Cell biology (also called cellular biology or formerly cytology, from the Peroxisomes are Ubiquitous Organelles in Eukaryotes that participate in the metabolism of Fatty acids and other metabolites Lysosomes are Organelles that contain Digestive enzymes (acid Hydrolases. The cell is the structural and functional unit of all known living Organisms It is the smallest unit of an organism that is classified as living and is often called In Cell biology, an organelle (pronunciation /ɔː(rgəˡnɛl/ is a specialized subunit within a cell that has a specific function and is usually separately enclosed

Amongst other subjects, de Duve studied the distribution of enzymes in rat liver cells using rate-zonal centrifugation. Enzymes are Biomolecules that catalyze ( ie increase the rates of Chemical reactions Almost all enzymes are Proteins Rats are various medium sized long-tailed Rodents of the superfamily Muroidea The liver is a vital organ in the human body and is present in Vertebrates and some other animals De Duve's work on cell fractionation provided an insight into the function of cell structures. Cell fractionation is the separation of homogeneous sets usually Organelles from a heterogeneous population of cells

In 1960, De Duve was awarded the Francqui Prize for Biological and Medical Sciences. Year 1960 ( MCMLX) was a Leap year starting on Friday (link will display full calendar of the Gregorian calendar. The Francqui Prize is a prestigious Belgian scholarly and scientific Prize, awarded each year since 1933 by the Francqui Foundation in recognition He was awarded the shared Nobel Prize for Physiology or Medicine in 1974, together with Albert Claude and George E. Palade, for describing the structure and function of organelles in biological cells. The Nobel Prize in Physiology or Medicine (Nobelpriset i fysiologi eller medicin is awarded once a year by the Swedish Karolinska Institute. Year 1974 ( MCMLXXIV) was a Common year starting on Tuesday (link will display full calendar of the 1974 Gregorian calendar. Albert Claude ( August 24 1899 &ndash May 22 1983) was a Belgian Biologist who won the Nobel Prize in Physiology or George Emil Palade ( November 19, 1912 &ndash October 8, 2008) was a highly regarded Romanian cell biologist. His later years have been mostly devoted to origin of life studies, which he admits is still a speculative field (see thioester). In the Natural sciences, Abiogenesis, or origin of life, is the study of how Life on Earth emerged from Inanimate Organic Thioesters are compounds resulting from the bonding of Sulfur with an Acyl group with the general formula R-S-CO-R'.

His work has contributed to the emerging consensus that the endosymbiotic theory is correct; this idea proposes that mitochondria, chloroplasts, and perhaps other organelles of eukaryotic cells originated as prokaryote endosymbionts, which came to live inside eukaryotic cells. The endosymbiotic theory concerns the origins of mitochondria and Plastids (e In Cell biology, a mitochondrion (plural mitochondria) is a membrane-enclosed Organelle found in most eukaryotic cells. Chloroplasts are Organelles found in Plant cells and eukaryotic Algae that conduct Photosynthesis. Animals Plants fungi, and Protists are eukaryotes (juːˈkærɪɒt or -oʊt Organisms whose cells are organized into complex The prokaryotes (proʊˈkærioʊts singular prokaryote /proʊˈkæriət/ are a group of Organisms that lack a Cell nucleus (= karyon or any other An endosymbiont is any Organism that lives within the body or cells of another organism i

De Duve proposes that peroxisomes may have been the first endosymbionts, which allowed cells to withstand the growing amounts of free molecular oxygen in the Earth's atmosphere. Peroxisomes are Ubiquitous Organelles in Eukaryotes that participate in the metabolism of Fatty acids and other metabolites Since peroxisomes have no DNA of their own, this proposal has much less evidence than the similar claims for mitochondria and chloroplasts. Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known

Bibliography

See also

External links

© 2009 citizendia.org; parts available under the terms of GNU Free Documentation License, from http://en.wikipedia.org
 Dapyx Software network: MP3 Explorer | Ebook Manager | Zenithic