One mark will be given for each correct answer and one mark deducted for each incorrect answer. False Have their own metabolism True May contain enzymes for replication False Cell wall Comments Viruses contain either DNA or RNA but not both. Some may have an envelope. Unlike bacteria, they do not have a cell wall or their own metabolism. They may contain enzymes for replication.
Parvovirus is a single stranded DNA virus.
Orthomyxoviruses and enteroviruses are singles stranded RNA viruses. False Adenoviruses False Papillomaviruses True Rhabdoviruses True Rotaviruses Comments Adenoviruses and papillomaviruses are double standed DNA viruses. Picornaviruses and rhabdoviruses are single stranded RNA viruses. Rotaviruses are double stranded RNA viruses. A viral vaccines are either inactivated split or subunit vaccines.