An organelle, like an organ in the body, is a subcellular structure that performs one or more specialized functions in the cell.
Nuclei, which store genetic information, mitochondria, which provide chemical energy, and ribosomes, which build proteins, are three of the most essential cell organelles.
Viruses are not cells in the technical sense.
As a result, they are devoid of the majority of cellular organelles, such as mitochondria and the endoplasmic reticulum.
The cytoplasm, nucleus, and other organelles that make up a cell's live portion, or protoplasm, are contained within this colorless substance.
The capsid, a protein coat that encases the genetic information, is what gives the virus its compact, infectious size.
There may also be an envelope surrounding the capsid in some viruses.