Question 1
Small infectious plant RNAs that function independently without encapsidation are called:
◦ viruses.
◦ viroids.
◦ virusoids.
◦ satellite RNAs.
◦ microRNAs.
Question 2
Some group I and group II introns require a maturase activity, which functions to:
◦ assist folding of the active catalytic structure of the intron.
◦ assist overall folding of the transcript.
◦ bring the two exons together.
◦ cleave the intron-second exon boundary.
◦ cleave the first exon-intron boundary.