NURSING EXAM QUESTIONS
MICROBIOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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bacteria
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virus
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fungi
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prion
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Detailed explanation-1: -BSE also known as Mad Cow Disease is a progressive neurological disorder of cattle that results from infection by an unusual transmissible agent called a prion. CWD is a prion disease that affects deer, elk and moose in some areas of North America, South Korea and Norway.
Detailed explanation-2: -A cow gets BSE by eating feed contaminated with parts that came from another cow that was sick with BSE. The contaminated feed contains the abnormal prion, and a cow becomes infected with the abnormal prion when it eats the feed. If a cow gets BSE, it most likely ate the contaminated feed during its first year of life.
Detailed explanation-3: -Prion diseases are transmissible, untreatable, and fatal brain diseases of mammals. Their cause is highly unusual: The host’s normal prion protein can, for unknown reasons, malfunction and assemble into structured aggregates called prions that cause infectious brain disease.
Detailed explanation-4: -Most scientists believe that BSE develops when a normal cellular protein in the brain known as prion protein loses its normal shape and triggers a chain reaction of further prion-protein misfolding, causing the destruction of brain cells and nervous system tissue.
Detailed explanation-5: -IN SUMMARY: PRIONS AND VIROIDS They are thought to contribute to several progressive brain disorders, including mad cow disease and Creutzfeldt-Jakob disease. Viroids are single-stranded RNA pathogens that infect plants. Their presence can have a severe impact on the agriculture industry.