Directions
Read the following questions. Choose the right answer.
There is only ONE correct answer to each question.
Which of the following is not characteristic of viruses?
- Obligate intracellular parasitism is required for replication.
- Host specificity governs which cell can be infected.
- Crystallization outside living cells occurs in some cases.
- artificial media support growth in certain conditions.
Show answer
Correct answer: D. artificial media support growth in certain conditions.
Why
Viruses cannot grow or replicate on artificial (cell-free) media — they require a living host cell, which is why D is not a true characteristic of viruses.