Which of the following statements is/are correct? 1. Viruses lack enzymes necessary for the generation of energy. 2. Viruses can be cultured in any synthetic medium. 3. Viruses are transmitted from one organism to another by biological vectors only. Selec

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Q: 68 (IAS/2013)
Which of the following statements is/are correct?
1. Viruses lack enzymes necessary for the generation of energy.
2. Viruses can be cultured in any synthetic medium.
3. Viruses are transmitted from one organism to another by biological vectors only.

Select the correct answer using the codes given below.

question_subject: 

Science

question_exam: 

IAS

stats: 

0,148,104,148,20,61,23

keywords: 

{'viruses': [2, 0, 0, 4], 'biological vectors': [0, 0, 0, 1], 'enzymes': [3, 0, 6, 3], 'energy': [0, 0, 1, 2], 'synthetic medium': [0, 0, 0, 1]}

The correct statement is:

1 only: Viruses lack enzymes necessary for the generation of energy.

Explanation:

1. Viruses are obligate intracellular parasites that lack their own metabolic machinery. They rely on the host cell`s enzymes and resources for energy production and replication.

2. Viruses require a host organism to replicate and cannot be cultured in synthetic media alone. They need living cells to provide the necessary machinery for replication.

3. Viruses can be transmitted from one organism to another by various means, including biological vectors (such as mosquitoes, ticks, and other organisms), but they can also be transmitted through direct contact, respiratory droplets, contaminated surfaces, and other mechanisms.

Therefore, the correct answer is:

1 only.