Becker's World of the Cell 9th Edition by Lewis Kleinsmith, Jeff Hardin, Gregory Paul Bertoni

Exercise 9

Spliceosomes. The RNA processing carried out by spliceosomes in the eukaryotic nucleus involves many different lands of protein and RNA molecules. For each of the following five components of the splicing process, indicate whether it is protein (P), RNA (R), or both (PR). Then briefly explain how each of the five fits into the process.
(a)snRNA
(b)Spliceosome
(c)snRNP
(d)Splice sites
(e)Lariat