BIOLOGICAL CLASSIFICATION
VIRUSES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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they take over the functions of a host cell
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they bypass the host’s immune system, causing disease
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they use their proteins as templates to make genetic material
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they contain no genetic material
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Detailed explanation-1: -Unlike other infectious agents, such as bacteria, viruses, and fungi, prions do not contain genetic materials such as DNA or RNA. The unique traits and genetic information of prions are believed to be encoded within the conformational structure and posttranslational modifications of the proteins.
Detailed explanation-2: -– Viruses and bacteria are microorganisms that contain genetic material. They do not generate spontaneously. In contrast, Prion Disease is caused by a change in shape of a cellular protein. The resulting pathogenic prion proteins begin to recruit and change normal proteins into an abnormal shape.
Detailed explanation-3: -They are distinguished by long incubation periods, characteristic spongiform changes associated with neuronal loss, and a failure to induce inflammatory response. The causative agents of TSEs are believed to be prions.
Detailed explanation-4: -Scientists believe CWD proteins (prions) likely spread between animals through body fluids like feces, saliva, blood, or urine, either through direct contact or indirectly through environmental contamination of soil, food or water.
Detailed explanation-5: -A prion /ˈpriːɒn/ ( listen) is a misfolded protein that can transmit its misfolded shape onto normal variants of the same protein. Prions are the causative agent of several transmissible and fatal neurodegenerative diseases in humans and other animals.