NURSING ANM AND GNM

NURSING EXAM QUESTIONS

MICROBIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
mad cow is caused by a
A
bacteria
B
virus
C
fungi
D
prion
Explanation: 

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.

There is 1 question to complete.