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:
Top Questions on biological classification
- ICBN refers to?
- TS EAMCET - 2025
- Biology
- biological classification
- Which of the following microorganisms is used in the production of curd from milk?
- MHT CET - 2025
- Biology
- biological classification
- In a DNA molecule, which of the following base-pairings is correct?
- MHT CET - 2025
- Biology
- biological classification
- Which is not a prime element?
- MHT CET - 2025
- Biology
- biological classification
- Study the following and pick up the correct combinations:
- TS EAMCET - 2024
- Zoology
- biological classification
Questions Asked in NEET exam
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): A typical unfertilized, angiosperm embryo sac at maturity is 8-nucleate and 7-celled.
Reason (R): The egg apparatus has 2 polar nuclei.In the light of the above statements, choose the correct answer from the options given below:
- NEET (UG) - 2025
- Angiosperms
- A ball of mass 0.5 kg is dropped from a height of 10 m. The ball hits the ground and rises to a height of 1.5 m. The impulse imparted to the ball during its collision with the ground is : (Take \(g = 9.8 \, \text{m/s}^2\))
- NEET (UG) - 2025
- Collision and Impulse
- Consider the diameter of a spherical object being measured with the help of a Vernier Callipers. Suppose its 10 Vernier Scale Divisions (V.S.D.) are equal to its 9 Main Scale Divisions (M.S.D.). The least count in the M.S. is 0.1 cm and the zero of V.S. is at -0.1 cm when the jaws of Vernier callipers are closed. If the main scale reading for the diameter is \(M = 5\) cm and the number of coinciding vernier division is 8, the measured diameter after zero error correction, is:
- NEET (UG) - 2025
- Measurement of length
- A container has two chambers of volumes \(V_1 = 2\) litres and \(V_2 = 3\) litres separated by a partition made of a thermal insulator. The chambers contain \(n_1 = 2\) moles and \(n_2 = 3\) moles of ideal gas at pressures \(p_1 = 1\) atm and \(p_2 = 2\) atm, respectively. When the partition is removed, the mixture attains an equilibrium pressure of :
- NEET (UG) - 2025
- Ideal Gases
A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is :
- NEET (UG) - 2025
- Moment Of Inertia
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:
