Until recently, the typical viruses known to science were $20-150 \mathrm{~nm}$ in size.
In 2003, the Mimivirus was discovered with a size of approximately 680 nm .
In 2013, the Pandoravirus was discovered which has a size of over 1000 nm .
Which viruses can be seen using both a light microscope with a maximum resolution of $0.25 \mu \mathrm{~m}$ and an electron microscope?

Picornaviruses are small viruses that are 30 nm in diameter. Picornaviruses are able to enter the cells of mammals and birds and can replicate within these cells.

The Zika virus is a pathogen that can infect human cells.

One of the smallest viruses is the polio virus, which has a diameter of approximately 30 nm .
In 2003, the Mimivirus was discovered which has a diameter of approximately 680 nm .
In 2013, the Pandoravirus was discovered which has a diameter of approximately 1000 nm .
Which row correctly matches a cell structure with a virus that has a similar approximate size?

Which structure is found in a typical bacterial cell?

Which rows could correctly identify the nucleic acids present in two different virus particles in a sample of air?

Which features shown in the diagram can be present in viruses?

Which statement about viruses is correct?

Which statements about viruses are correct?
1 They contain DNA or RNA.
2 They use host cells to synthesise virus proteins.
3 They can have a protective coat of peptidoglycan.