cortisone can be considered an inactive metabolite of cortisol. However‚ 11-beta-steroid dehydrogenase can catalyze the reverse reaction as well‚ and‚ thus‚ cortisone is also the inactive precursor molecule of the active hormone cortisol. Cortisone is activated through hydrogenation of the 11-keto-group‚ and cortisol is‚ thus‚ sometimes referred to as hydrocortisone.[citation needed]Cortisone is one of several end-products of a process called steroidogenesis. This process starts with the synthesis of cholesterol
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Asian-American boys from the Boston area. They were recruited by local Chinese‚ Korean‚ and Japanese newspapers and summer programs at Chinatown. The participants were randomly assigned to one of three conditions: Asian identity activated‚ female/male identity activated‚ and no identity activated (control) or have not been defined
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form an amide. This reaction is widely used‚ especially in the synthesis of peptides. On the simple addition of an amine to a carboxylic acid‚ a salt of the organic acid and base is obtained. To overcome this‚ the carboxylic acid first needs to be "activated". This is usually done by converting the acid into a more reactive derivative (i.e. anhydride‚ acid halide) or by using a coupling agent. In some cases‚ high temperatures (>200 °C) can overcome salt formation by driving off water‚ without the need
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Describe the physiological approach to the study of the mind. Explain how Donders experiment can be repeated in a modern laboratory using the physiological approach to the study of the mind Donder’s work attempts to describe the processes going on in the mind‚ by analyzing cognitive activity into separate stages. Until Donder’s work‚ many scientists had assumed that the mental operations involved in responding to a stimulus occurred instantaneously. Donder was particularly interested in "timing
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hand warmers‚ mainly the iron powder and activated charcoal‚ and oxygen in the atmosphere‚ react with each other chemically to create warmth. Inside the pouch‚ there is iron powder. When it comes in contact with oxygen‚ the iron rusts and releases heat. The outside bag is a microporous pouch‚ which has tiny holes that are big enough to allow air inside‚ providing the oxygen for the reaction between iron and oxygen. Inside the hand warmer‚ there is also activated charcoal‚ which is charcoal that has been
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the charectersitic spectrum. Activated Alumina: Activated Alumina is a granulated form of aluminum oxide. In this process‚ water containing the contaminant is passed through a cartridge or canister of activated alumina which adsorbs the contaminant. The cartridge of activated alumina must be replaced periodically. Activated alumina devices can accumulate bacteria‚ so treated water may have higher bacteria counts than raw water. The advantages of Activated Alumina filters include: 1.
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Biotechnology In environment Clean up Process - APPSC G1 Mains - Paper 4 - Section 2 - Unit 3 The term "Environment" is defined as our surroundings which includes the abiotic component (the non living) and biotic component (the living) around us. The abiotic environment includes water‚ air and soil while the biotic environment consists of all living organisms – plants‚ animals and microorganisms. Environmental pollution broadly refers to the presence of undesirable substances in the environment
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Chapter 14: Signal Transduction Mechanisms: Messengers and Receptors Signal Transduction Mechanisms: II. Messengers and Receptors In the second major means of intercellular communication the signal is transmitted by regulatory chemical messengers Receptors are located on receiving cells that can be quite distant from the secreting cell Chemical Signals and Cellular Receptors Cells produce signals‚ in some cases by displaying molecules on their surfaces or by releasing a chemical signal Multicellular
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Ocean Dumping: Key Issues Liz Gomez Ocean Dumping: Key Issues Marine debris is the official designation and referents to human created wastes that pollutes and are dumped deliberately or accidentally in lakes‚ waterways‚ seas and oceans. While certain debris naturally float on bodies of water (i.e. logs and trees that got cut via natural events)‚ certain communities‚ peoples and industries the world over deliberately dump debris and garbage in bodies of water without much thought into the
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Wilfred Owen Wilfred Owen criticizes war using imagery and poetic techniques to convey his feeling towards war and to try to show how young men are sacrificed‚ slaughtered‚ dehumanised and ignored for their bravery. His poems are about the suffering and horrors young men face on the battlefield‚ they are left scarred and demented by the sounds‚ horrors and fear of death. They are forced to watch their friends die in front of them and they lose their minds‚ not knowing when or how they could suddenly
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