Viruses are called non-cellular infectious entities because _______?

وائرس کو غیر سیلولر متعدی ہستی کہا جاتا ہے کیونکہ _______؟

They are pathogens and cause infections

They cause infections, and can only replicate inside living cells

They can replicate inside as well as outside the living cells

None of these

Viruses lack cellular structure and metabolic machinery, relying on host cells for replication.

They infect host cells to reproduce, making them obligate intracellular parasites.