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Negative strand ssRNA viruses need to have a preformed replicase when they invade a mammalian cell because they | |
A. | use it to terminate transcripts when they copy host cell mRNA [Wrong Answer] |
B. | have to make a positive strand copy that can be translated [Correct Answer] |
C. | use it to modify host enzymes that are recruited for viral replication [Wrong Answer] |
D. | none of the above [Wrong Answer] |