The spliceosome is composed of
- A
rRNAs and proteins (ribosomes) that catalyze peptide bond formation
- Bcheck_circle
snRNAs and proteins (snRNPs) that catalyze intron removal
- C
DNA helicases and polymerases that unwind and copy templates
- D
tRNAs and synthetases that load amino acids onto anticodons
Explanation
The spliceosome is a ribonucleoprotein complex; the catalytic activity actually resides in the RNA components — splicing is a ribozyme reaction.