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Explain the Microscope?
Microscope is a powerful and crucial basic tool in the field of microbiology. Microbiology, as we have already studied in our theory Course, is the science dealing with the organisms too small to be seen with unaided eye. The existence of microbial life to the world was introduced first by Antony Van Leeuwenhoek in 1673, with the help of simple, crude, self-made, single-lens microscope having a magnification of about 300.
Over the years, microscopes have evolved to increase the magnification several thousand fold. Modern day microscopes are either light microscopes or electron microscopes. Light microscopes use either visible light or ultraviolet rays to illuminate specimens. These are generally used to look at intact cells. On the other hand, electron microscopes use electron beams instead of light rays and electromagnets instead of lenses. These are generally used to look at internal structures or details of cell surface.
Explain Micronutrient deficiencies during kwashiorkor? Almost all the children manifest anaemia (due to iron deficiency) of some degree. Eye signs of vitamin A' deficiency are
Explain the Disadvantages of tissue punch - There is a loss of keratini-ed tissue and this can lead to a compromised soft tissue barrier in cases where there is deficiency of a
Why are the tropical forests also known as stratified forests? In the tropical forests tall trees of several species have their crowns forming a superior layer under which dive
Explain the Deficiency and Toxicity of vitamin A? Who defines VAD as tissue concentrations of vitamin A low enough to have adverse health consequences even if there is no evide
Q. How is gas exchange done in flatworms? Platyhelminthes exchange gases exclusively by diffusion through their body surface. This is only possible because all cells are locali
RAP can be determined semiquantitatively by assessing collapse of the inferior vena cava during inspiration. The inferior vena cava is imaged subcostally and its diameter is exa
Nature defences against viral infections 1. Interferons - In 1957 Issue and Lindenmann discovered that vertebrate cells infected with viruses, produce a diffusible antiv
Determine the term - Neuropsychological approach The neuropsychological approach relies on the use of tests in which poor performance may indicate either focal (localised) or d
Milkers’ nodules Milkers’ nodules are caused either by cowpox virus, an orthopoxvirus or pseudocowpox virus, a parapoxvirus. These are relatively benign lesions that occur most co
The Jones family was caught in a fire but escaped. Unfortunately the father and daughter suffered burns. The father had second degree burns on his chest, abdomen, and both arms, an
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