How can a negative strand rna virus make protein during an infection?

Which prevent errors in dna replication? a. helicase enzyme checks the dna for errors. b. each base can attach to only one other type of base. c. ribosome enzymes prevent errors from happening. d. dna contains no complementary base pairs.

Four types of motile cells in human body?

What are two reasons for why a species might disappear from the fossil record?