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

Medium

Science & Technology

Prelims 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.

Select an option to attempt

Explanation

Statement 1 is correct: Viruses do not have metabolic machinery of their own. They lack enzymes needed for ATP generation and therefore must depend entirely on a host cell.

Statement 2 is incorrect: Viruses cannot be grown on artificial or synthetic media. They need living host cells (bacteria, plants, animals, or cell cultures) to replicate.

Statement 3 is incorrect: Transmission can occur through: