Which of the following statements is true?
viruses are bigger than bacteria.
viruses conduct cellular respiration like any other living organism.
viruses have both rna and dna.
viruses cannot be cultured on artificial laboratory media of any kind

Viruses cannot be cultured on artificial laboratory media of any kind.

Process of elimination,
--> Viruses are simpler than bacteria, therefore smaller (Can't be A)
--> Viruses don't contain organelles to conducted cellular respiration (Can't be B)
--> Viruses can only have either DNA or RNA, so when they enter a cell they either use reverse transcriptase or DNA replication, not both (Can't be C)
Therefore last answer is correct + I know that is the case