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Search results 471 - 480 of 1458 matching essays
- 471: Mitochondria
- ... The C2 acetyl CoA is coupled to oxaloacetate, a C4 acceptor in the cycle. The product is citrate a C6 compound. This first product, citrate, is the reason the cycle is sometimes called the citric acid or ticarboxylic acid cycle, referring it after the scientist whose lab most advanced our understanding of it, Sir Hans Krebs. (Comptons 160) Two of the early reactions of the cycle are decarboxylations which shorten citrate to succinate a ...
- 472: Hurricanes
- ... fueled by the energy formed during the condensation of water vapor from the air. The release of heat warms the air and provides buoyancy for its upward flight. (The condensed water vapor becomes clouds and rain). The result is to reduce the pressure near the surface that encourages a more rapid inward flow of air. A large quantity of warm, moisture-laden air is required and a continual supply is needed ... approaches, wind speeds increase, first to an intensity of 60 kilometers per hour and eventually to over 160 kilometers per hour at the eye wall of the storm. With the increased wind speed comes torrential rain, which drops from 15 to 30 centimeters of water as it passes overhead. Flooding usually inflicts more destruction than wind. The greatest flooding in coastal areas is caused by the rising sea level that accompanies ...
- 473: Biology, The Five Major Compounds
- ... growth and development. They do all of this by dictating protein structure. Nucleic acids are composed of carbon, oxygen, hydrogen, nitrogen and phosphorous atoms. There are two major kinds of nucleic acids; they are deoxyribonucleic acid and ribonucleic acid. DNA is the genetic material found within the cell nucleus. It makes up the genes that an organism inherits from its parents, and these tell the cells which proteins to make. Each gene directs the ...
- 474: James Watson's The Double Helix: A Review
- ... Double Helix: A Review A review of Watson, James D. The Double Helix. New York: Atheneum, 1968. James Watson's account of the events that led to the discovery of the structure of deoxyribose nucleic acid (DNA) is a very witty narrative, and shines light on the nature of scientists. Watson describes the many key events that led to the eventual discovery of the structure of DNA in a scientific manner ... and Crick let DNA alone, only to be pondered upon while not working on other projects. That year Watson worked on researching the tobacco mosaic virus (TMV). A vital component to TMV was the nucleic acid, so it was the perfect front to mask his continued interest in DNA. Over time and hard work, Watson was able to show that some parts of TMV were helical in shape and thus decided ...
- 475: Nies Bohr
- ... Copenhagen, because of his Jewish background, and went to Los Alamos, North Mexico, were he helped scientist who were working on the first atomic bomb. Before he left, he dissolved his golden Nobel medal in acid. In 1945, after the war was over, he returned to his country, and precipitated the gold from acid and recast the medal. Bohr worked very hard on the peaceful uses of atomic energy and organized the first Atoms for Peace Conference in Geneva in 1955. He was awarded the first Atomic Peace award ...
- 476: Overpopulation
- Its a dark, cold, rainy night. The wind chill can be compared to that of Arctic wastelands, only the rain wont freeze and disappear upon contact to your skin, instead the freezing cold ice-rain pierces your flesh like a million needles. The cold doesnt subdue. A dark, small, shadowy object can be seen scurrying across the unlit streets. This dreary atmosphere does Hells Kitchen in the New ...
- 477: A Brief Overview Of Psychedelics
- ... reality that they seem to produce, as well as highly complex sensory experiences, some report receiving inspiration from such drugs. The modern world s first glimpse into the world of psychedelics was through d-lysergic acid diethylamide, or LSD. LSD was first synthesized in 1938 by two Swiss chemists from the alkaloid lysergic acid found in ergot, a parasitic fungus that grows on rye and other grains. Five years later, on April 19, 1943 Albert Hoffman, one of LSD s co-discoverers accidentally ingested some of the drug, and ...
- 478: Mitochondria 2
- ... and does not require the presence of oxygen. Glycolysis is referred to as the anaerobic stage of cellular respiration since oxygen is not required. The second and third stages of cellular respiration are the citric acid cycle (Krebs Cycle) and the electron transport chain. Unlike glycolysis, these stages are aerobic. This means that oxygen must be present for them to occur. The second stage of cellular respiration, the Krebs cycle, converts pyruvic acid into carbon dioxide, and this takes place within the matrix of the mitochondria. In the Krebs cycle, the three carbon fragments are broken down into one carbon molecules of carbon dioxide. One ATP is produced ...
- 479: Life During the Civil War
- ... no grumbling at the hard drill and harder work(Ratchford, 11). The weather varied a lot during the Civil War. At times it would snow up to depths of eight inches and sometimes it would rain and hail for hours on end(Russell, 130). Other times it would be very hot. Sometimes when it would rain, soldiers would wake up half submerged(Brown,122). Death was also a major fear during the Civil War. We cook and eat, talk and laugh with the enemies dead lying all about us as though ...
- 480: The Dust Bowl of North America
- ... vast expanse of land located in a region east of the Rocky Mountains in North America. Precipitation in the region is sparse because it is found in the rainshadow of the Rockies; as a result, rain is very unpredictable as to when it will fall so farmers had to make due with what they had back in the 1930s. This lack of water created a hard dry soil that was ... methods. The roots would help prevent further erosion. Broad leafed crops such as clover and alfalfa produce organic matter and available nitrogen; accordingly, they were planted and also because they absorb the force of the rain and their roots bind the soil. Another important lesson learnt from the Dust Bowl disaster was the importance of proper schooling. Farmers had to be taught to return wheat stubble and straw after harvesting for ...
Search results 471 - 480 of 1458 matching essays
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