Question

How big are virions?

Answer 1

Virion

1. Virion is the complete infectious particle consisting of an outer protein coat called the capsid.
2. The nucleic acid genome is surrounded by the capsid.
3. Virions are about 10 – 400 nm in diameter.
4. They are extremely small in size to be seen by a light microscope.
5. So, they are visualized using a transmission electron microscope.