Budding release of virus may result in long lasting or persistent infection. True False Question 44 All viruses use the host cell's nucleic acid polymerases for replication. o True o False Question 45 Which of the following infectious particles do NOT have protein in their structure? A) bacteriophages B) prions C) animal viruses D) viroids E) both prions and viroids O B O D Question 46 One mechanism by which viruses may cause cancer is to interrupt the genetic regulatory sequences of repressor proteins. Which of the following types of viruses is most likely to be involved in causing cancer by this mechanism? A) +5SRNA viruses B) dsRNA viruses C) -SSRNA viruses D) retroviruses El both +SSRNA and -SSRNA viruses E