alleryIn bacterial ribosomes, peptide bond formation is catalysed by which molecule?
AA protein enzyme on the small subunit
BThe mRNA itself
CThe 23S rRNA of the large subunit
DAn aminoacyl tRNA synthetase
Answer & Solution
Correct answer: C. The 23S rRNA of the large subunit
Peptidyl transfer occurs in the large subunit, with the growing peptide held at the P site.
The 23S rRNA in bacteria catalyses peptide bond formation, making it a ribozyme.
Keep practising Unit 6A: DNA and RNA Structure & Replication
Browse all Unit 6A: DNA and RNA Structure & Replication questions for AP Biology, or explore more Biology topics.
Related questions
In eukaryotes, primary mRNA transcript becomes mature mRNA afterThe 'one gene - one polypeptide' concept was proposed byIn prokaryotes, the small ribosomal subunit recognises the mRNA initiation site via theIn humans, the percentage of A in a DNA sample is 30 %. By Chargaff's rule, the percentageTranscription differs from replication in that itThe genetic code is described as degenerate becauseOkazaki fragments are formed on theDuring DNA replication, the enzyme that unwinds the double helix is