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Ribosomal RNA: Quiz


Question 1: Ribosomal ribonucleic acid (rRNA) is the central component of the ________, the protein manufacturing machinery of all living cells.
RibosomeCell nucleusCell (biology)Mitochondrion

Question 2: Both prokaryotic and ________ can be broken down into two subunits (the S in 16S represents Svedberg units):

Question 3: Bacterial 16S, 23S, and 5S rRNA genes are typically organized as a co-transcribed ________.
DNAOperonTrp operonTranscription (genetics)

Question 4: There may be one or more copies of the operon dispersed in the genome (for example, ________ has seven).
Escherichia coliPseudomonas aeruginosaPathogenic bacteriaHelicobacter pylori

Question 5: In ________ a small 30S ribosomal subunit contains the 16S rRNA.
Gram-positive bacteriaBacteriaProkaryoteCyanobacteria

Question 6: [2] For this reason, genes that encode the rRNA (rDNA) are sequenced to identify an organism's ________ group, calculate related groups, and estimate rates of species divergence.
TaxonomyFolk taxonomyMilitary taxonomyBiological classification

Question 7: ________ contains either a single rDNA operon or multiple copies of the operon.


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