Which of the following rRNAs make up the small subunit of the eukaryotic ribosome?
A
18S
B
5S
C
16S
D
28S
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1
Understand that ribosomes are composed of two subunits: a small subunit and a large subunit. In eukaryotes, these subunits are made up of ribosomal RNA (rRNA) and proteins.
Identify the rRNAs that are part of the eukaryotic ribosome. The small subunit of the eukaryotic ribosome is known as the 40S subunit.
Recall that the 40S subunit of the eukaryotic ribosome contains a specific type of rRNA.
Recognize that the 18S rRNA is the component of the small subunit (40S) in eukaryotic ribosomes.
Differentiate between eukaryotic and prokaryotic ribosomes, noting that 16S rRNA is found in the small subunit of prokaryotic ribosomes, not eukaryotic ones.