Cell injury In this topic we are going to cover Cell injury Causes of cell injury Mechanism of cell injury Morphologic alterations in cell injury Morphologic types of necrosis Objectives Describe cell injury List the causes of cell injury Discuss how depletion of ATP causes cell injury Describe how mitochondrial damage cause cell injury Explain the mechanism of cell injury by free radicals Discuss how calcium ion influx cause cell injury Cell injury cell injury results when cells
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Various types of Fuel Cells and their working By : Divykant Vishwakarma 03996404910 EEE 2nd shift S.No. 14 Fuel Cell A fuel cell is a device that converts the chemical energy from a fuel into electricity through a chemical reaction with oxygen or another oxidizing agent. Hydrogen is the most common fuel‚ but hydrocarbons such as natural gas and alcohols like methanol are sometimes used. Fuel cells are different from batteries in that they require a constant source of fuel and oxygen/air
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October 2014 Cell Division Mitosis Abstract Mitosis and Meiosis: Cells can be divided in unicellular organisms or in multi-cellular organisms. DNA controls the cell division. Bacteria reproduce by a process called binary fission. Bacteria have one chromosome that’s attached to the cell membrane. The chromosome replicates and the two copies separate as the cell grows. Over a period of time this one cell makes two cells. Eukaryotes do the process of mitosis. In mitosis‚ each daughter cell gets about
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|ABSTRACT | | | |A solar cell is a semiconductor device | | | |that converts solar energy into | | | |electricity by the photovoltaic effect‚ | | | |representing the fundamental power | | | |conversion unit of a photovoltaic system| | | |‚works under the principle of a P-N | | | |junction that absorbs light ‚ releases | | | |electrons and holes ‚ creating a voltage| | | |in the cell ‚ which is then applied to | | | |load; being environmentally
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Henrietta’s Cells. It is unfortunate that the Lacks family did not know that research was being done on Henrietta’s cells‚ which made the family feel like they were betrayed by doctors at the Johns Hopkins Hospital‚ but it was a common practice of doctors in the 1950s and consent was not required for research as it is today. Also‚ it is unfair that Samuel Reader and Monroe Vincent‚ the founders of Microbiological associates‚ a cell distribution company‚ made millions off of selling HeLa cells. However
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Cell Fractionation i) EQUIPMENT: Cold Liver‚ Blender‚ Gauze‚ Fridge‚ Isotonic Solution‚ Centrifuge‚ Tubes‚ Scalpel‚ HOMOGENIZATION • Take chilled liver tissue and cut into smaller pieces. • Place liver into blender with cold isotonic solution. • Blend until you have a thick soup like substance (homogenate). • Filter the mixture to remove large debris through gauze into a tube. DIFFERENTIAL CENTRIFUGATION • Attach tubes of homogenate to the refrigerated Centrifuge and turn on to spin
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Cell phones are the most essential devices used in the 21st century. People are using cell phones now more than ever. The first cellular device was invented in the 1940’s and they have been used till this day. The design is very unique‚ making it top dollar in the store. The development of the cellular device has helped better the people of the United States and throughout the world. Today cell phones are much more modified and abstract in the way their being used. Communication is now distributed
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Schools ban students from using cell phones at school and at all school functions? By Olivia Acuña ENG 111G27 9/11/2011 Cell phones have created a new era of communication between students around the world. Some students believe cell phones are helpful to communicate with their friends and family. Others disagree and believe that cell phones are being used in an inappropriate manner‚ during and after school activities. I strongly believe that cell phones should be banned during school
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Topic 2 – Cell membranes Reading Chapter 5 Objectives Functions of cell membranes The fluid mosaic model The lipid bilayer – phospholipids‚ glycolipids and sterols Properties of the lipid bilayer Membrane proteins – the ‘mosaic’ in the model Solute movements across membranes BIO 1140 – SLIDE 1 http://www.nikonsmallworld.com/gallery/year/2006/id/751 Functions of cell membranes – an overview Fluid mosaic model Singer & Nicolson 1972 Fluid lipid molecules in which
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Discovering Cells Directions: answer the following questions using complete sentences. Use pages 6C-13C of your textbook. 1. What are cells? 2. When was the first microscope invented? 3. What is a microscope? 4. What is the difference between a simple and compound microscope? 5. Who was one of the first people to observe cells? 6. What did Anton van Leeuwenhoek discover? 7. A Scanning Tunneling Microscope (STM)
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