Consider the following: ​ 1. Bacteria ​ 2. Fungi ​ 3. Virus ​ Which of the above can be cultured in artificial/synthetic medium? ​

The correct answer is A (1 and 2 only). Bacteria and fungi can both be grown on artificial media, while viruses cannot.

• Statement 1 (Bacteria): correct. Most bacteria grow on defined or complex artificial media such as nutrient agar and MacConkey agar. Fastidious species need enriched media, but they are still cultured outside a host.
• Statement 2 (Fungi): correct. Fungi are grown on media like Sabouraud dextrose agar and potato dextrose agar. Many are saprophytes, and pathogenic species are routinely isolated this way.
• Statement 3 (Viruses): incorrect. Viruses are obligate intracellular parasites. They lack their own metabolic machinery and need living host cells, such as cell lines or embryonated eggs, to replicate.

The core concept is the difference between cellular and acellular microbes. Culture methods underpin diagnosis, antibiotic and antifungal sensitivity testing, and vaccine production, which links this to the Health and Science syllabus and to Mains questions on antimicrobial resistance.

Trap: Assuming that because viruses are grown in labs for vaccines, they can be cultured on artificial media like bacteria. They still need living cells.