Fibrillarin methylates a precursor of this molecule within the dense fibrillar component. A famous electron micrograph taken by Oscar Miller showed that this molecule is synthesized in repeating units that resemble Christmas trees. The gene that encodes this molecule is the most common reference used in microbial metabarcoding. The anti-Shine–Dalgarno sequence is found in a conserved form of this molecule that Carl Woese (“woes”) sequenced to develop the three-domain system of classification. Chloramphenicol blocks the peptidyl transferase activity of this molecule. In eukaryotes, this molecule is transcribed by Pol I (“paul one”) in the nucleolus and assembled with proteins into the 40S and 60S subunits. For 10 points, name this most abundant type of cellular RNA, which forms the structure that performs translation. ■END■
ANSWER: ribosomal RNA [or rRNA; accept 16S rRNA or 18S rRNA or 5S rRNA or 5.8S rRNA or 23S rRNA or 28S rRNA or SSU rRNA or LSU rRNA; accept small nuclear RNA or snRNA until “Christmas” is read, but reject afterward; prompt on RNA or ribonucleic acid; prompt on ribosome or small subunit or large subunit by asking “what molecule is that made of?”]
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= Average correct buzz position