Demonstrate that a disease is caused by a specific microorganism 4. Microscope resolution ____________ as the wavelength of radiation used to illuminate the specimen decreases. A decrease in the wavelength of radiation to illuminate the specimen results in a __________ resolving power value for the microscope! A. increases‚ smaller 5. Living‚ unstained cells and organisms can be observed best using A. Phase contrast microscopy 6. Acid- fast organisms such as mycobacterium tuberculosis resist
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Use of Computers in Education Computers have become an inseparable part of our lives to a great extent. Particularly in the field of education‚ their uses are manifold. Let us understand them further. Over the years‚ computers have changed the way the world works. They have proved to be an asset not only for the corporate sector‚ but also in other sectors such as medicine‚ architecture‚ communication‚ research‚ sports and education. Speaking of which‚ computers have taken over the field of education
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thus deriving the name. However what Hooke actually saw was the dead cell walls of plant cells (cork) as it appeared under the microscope. Hooke’s description of these cells was published in Micrographia. The cell walls observed by Hooke gave no indication of the nucleus and other organelles found in most living cells. The first man to witness a live cell under a microscope was Anton van Leeuwenhoek‚ who in 1674 described the algae Spirogyra. Van Leeuwenhoek probably also saw bacteria. Formulation
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Title: Microscopy Objective: To learn how to use and care for a microscope and to know the parts of a compound microscope and to efficiently use the microscope to focus on specimen. Introduction A microscope is an optical instrument used for viewing very small objects‚ typically magnified several hundred times. It consist of different lenses such as: Scanning = 4X‚ Low power = 10X‚ High power = 40 or 43X‚ Oil Immersion = 100X. A microscope is an instrument to see
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Exercise 8-B Differential Staining Gram Staining and Acid Fast Staining Introduction: Differential Staining‚ one which facilitates differentiation of various elements in a specimen is a general term that can refer to a number of specific processes. Using multiple stains can better differentiate between different microorganisms or cellular components of a single organism. Gram’s Stain is a widely used method of staining bacteria as an aid to their identification. It was originally devised by Hans
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functions. Structural information about cytoskeleton organization is critical for understanding its functions and mechanisms underlying various forms of cellular activity. Because of the nanometer-scale thickness of cytoskeletal fibers‚ electron microscopy is a key tool to determine the structure of the cytoskeleton. Microtubules are conveyer belts inside the cells. They move vesicles‚ granules‚ organelles like mitochondria‚ and chromosomes attachment proteins. They also serve a cytoskeletal
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examines the possibility of creating high fat fruit emulsion with mango puré‚ rapeseed oil and lecithin‚ using simple blending equipment. The purélike products were evaluated for emulsion stability by a storage test‚ oil droplet size by a light microscope and light scattering device‚ viscosity by a viscometer‚ sensory properties by Flavoring profiling. Furthermore the nutritional values were calculated. Successful emulsions were created using up to 50 g/100g rapeseed oil with adequate emulsion
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MICROBIOLOGY SECTION The microbiology section aims at studying yu ailments and diseases from the isolation of suspected causative organisms. The processes involved in the isolation of these organisms include; culturing‚ staining‚ microscopy and sensitivity tests. Samples collected for examination include; stool‚ blood‚ sputum‚ urine‚ vaginal swab‚ wound swab and wound biopsy. Bacterial Culturing and sensitivity Cultures are carried out to isolate suspected organisms from a sample. There are different
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is whenever two objects come into contact with one another. Then materials are exchanged between them. 7. With what instrument did Dr. Walter C. McCrone make significant contributions to forensic science? Dr. Walter C McCrone used microscopes. He used microscopy‚
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violet and an octopus‚ they are all built in essentially the same way. The most basic similarity is that all living things are composed of one or more cells. This is known as the Cell Theory. • our knowledge of cells is built on work done with microscopes • English scientist Robert Hooke in 1665 first described cells from his observations of cork slices. Hooke first used the word “cell”. • Dutch amateur scientist Antonie van Leeuwenhoek discovered microscopic animals in water • German scientists
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