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

The structure of a virus :
1. A protective protein shell, or capsid.
2. A nucleic acid genome made of DNA or RNA, tucked inside of the capsid.
3. A layer of membrane called the envelope.
As viruses have no ribosomes, mitochondria, or other organelles, they are completely dependent on their cellular hosts for energy production and protein synthesis.