Here's why:
* Not a cell: Viruses are not considered living organisms because they lack the essential characteristics of life, such as the ability to reproduce independently or carry out metabolic processes. They lack the typical cell structures like a nucleus, cytoplasm, or organelles.
* Ability to reproduce: Viruses can only reproduce within living cells. They hijack the host cell's machinery to create more copies of themselves.
Therefore, the phrase accurately reflects the unique nature of viruses.
