Question

Virion size ranges from ______

1) 1-40 nm.
2) 10-400 nm.
3) 600-1,000 nm.
4) 1,000-10,000 nm.

Answer 1

Virion size generally ranges from 20 nm to 900 nm, with most viruses too small for light microscopy and only visible through electron microscopy.

Step-by-step explanation:

Virion size ranges from 20 nm to 900 nm in diameter. Virions, or single virus particles, represent the infectious form of a virus outside the host cell. While most virions are too small to be seen with a light microscope, ranging from about 20 to 250 nanometers, some, like the pandoravirus and the poxvirus, can be larger, reaching up to 1000 nm in diameter. Notably, it wasn’t until the advent of the electron microscope that the detailed structure of these tiny entities, such as the tobacco mosaic virus, could be observed.