Infectious proteins are present in
- gemini viruses
- prions
- viroids
- satellite viruses.
The Correct Option is B
Approach Solution - 1
The correct answer is Option B) prions
Prions are named by Stanley Prusiner (got Nobel Prize in 1997). Prions are infectious agents which are made of proteins only (without nucleic acid). Prions are the causal agents of scrapie disease of sheep.
Approach Solution -2
The correct answer is Option B) prions
Real Life Applications
- It is possible to pinpoint the origin of a disease epidemic using infectious proteins.
- The use of infectious proteins as bioweapons is possible.
- Prions, for instance, may be altered to be more contagious or to result in more severe sickness.
- To better comprehend the disease-cause processes and create novel therapies, researchers are studying infectious proteins.
Question can also be asked as
- What biological entity contains infectious proteins?
- What type of infectious agent is composed entirely of proteins?
- What is the name of the infectious agent that can trigger normal proteins in the brain to fold abnormally?
- Which infectious agent can cause a number of degenerative brain diseases, including mad cow disease, Creutzfeldt-Jakob disease, fatal familial insomnia, kuru, and an unusual form of hereditary dementia known as Gerstmann-Straeussler-Scheinker disease?
Learn with videos:
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Questions Asked in NEET exam
Which of the following microbes is NOT involved in the preparation of household products?
A. \(\textit{Aspergillus niger}\)
B. \(\textit{Lactobacillus}\)
C. \(\textit{Trichoderma polysporum}\)
D. \(\textit{Saccharomyces cerevisiae}\)
E. \(\textit{Propionibacterium sharmanii}\)- NEET (UG) - 2025
- Microbiology
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A full wave rectifier circuit with diodes (\(D_1\)) and (\(D_2\)) is shown in the figure. If input supply voltage \(V_{in} = 220 \sin(100 \pi t)\) volt, then at \(t = 15\) msec:
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A constant voltage of 50 V is maintained between the points A and B of the circuit shown in the figure. The current through the branch CD of the circuit is :
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Concepts Used:
Biological Classification
The process of grouping living organisms into categories is called biological classification. The most modern 5-kingdom classification was put ahead by an eminent scientist R.H.Whittaker. The five-kingdom classification is based on the criteria like cell structure, mode of nutrition, body form, and reproduction. One of the most important characteristics of this system is that it follows the evolutionary sequence of living organisms. The organisms are classified into distinct taxa or levels like Kingdom, Phylum, Division, Class, Order, Family, Genus, and Species. The 5 kingdoms are as follows:
