Indicate true (T) and false (F) statements below regarding riboswitches. Your answer would be a four-letter string composed of letters T and F only, e.g. TTTF.
( ) A riboswitch permits transcription elongation only when bound to its small-molecule ligand.
( ) Riboswitches appear to be a modern evolutionary invention.
( ) Riboswitches are often located near the 3? end of mRNAs, and therefore fold after the rest of the mRNA.
( ) Riboswitches are exclusively found in prokaryotes.

Question

Indicate true (T) and false (F) statements below regarding riboswitches. Your answer would be a four-letter string composed of letters T and F only, e.g. TTTF.
( )	A riboswitch permits transcription elongation only when bound to its small-molecule ligand.
( )	Riboswitches appear to be a modern evolutionary invention.
( )	Riboswitches are often located near the 3? end of mRNAs, and therefore fold after the rest of the mRNA.
( )	Riboswitches are exclusively found in prokaryotes.

Quizplus · Accepted Answer

Riboswitches are short RNA sequences that can change conformation upon ligand binding and regulate transcription. These ancient regulators are common in bacteria as well as in eukaryotes. They are often found near the 5? end of mRNAs and fold co-transcriptionally.

Indicate True (T) and False (F) Statements Below Regarding Riboswitches