Viruses — Culturing and Transmission — UPSC Prelims PYQ 2013
Which of the following statements is / are correct?
- Viruses lack enzymes necessary for the generation of energy.
- Viruses can be cultured in any synthetic medium.
- Viruses are transmitted from one organism to another by biological vectors only.
Select the correct answer using the codes given below.
- 1 only
- 2 and 3 only
- 1 and 3 only
- 1, 2 and 3
Explanation
Statement 1 is correct
- Viruses lack enzymes necessary for energy generation, as they rely on host cells for metabolic functions.
Statement 2 is incorrect
- Viruses cannot be cultured in synthetic media; they require living host cells to replicate.
Statement 3 is incorrect
- Viruses can be transmitted through various means, including biological vectors (e.g., mosquitoes) and non-biological methods (e.g., contact with infected surfaces or droplets).
PMF Concept Hack
|
Answer: (a) 1 only; Difficulty Level: Easy
