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1. Overview of Cell Biology2h 49m
2. Chemical Components of Cells1h 14m
3. Energy1h 33m
4. DNA, Chromosomes, and Genomes2h 31m
5. DNA to RNA to Protein2h 31m
6. Proteins1h 36m
7. Gene Expression1h 42m
8. Membrane Structure1h 4m
- The Lipid Bilayer
  38m
- Membrane Proteins
  25m
9. Transport Across Membranes1h 52m
10. Anerobic Respiration1h 5m
11. Aerobic Respiration1h 11m
12. Photosynthesis52m
13. Intracellular Protein Transport2h 18m
14. Cell Signaling1h 28m
15. Cytoskeleton and Cell Movement1h 39m
16. Cell Division3h 5m
17. Meiosis and Sexual Reproduction50m
18. Cell Junctions and Tissues48m
19. Stem Cells13m
- Stem Cells
  13m
20. Cancer44m
21. The Immune System1h 6m
22. Techniques in Cell Biology1h 41m

5. DNA to RNA to Protein

tRNA, rRNA and the Codon Code

Cell Biology

5. DNA to RNA to Protein

tRNA, rRNA and the Codon Code

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Multiple Choice

Which of the following rRNAs make up the small subunit of the eukaryotic ribosome?

18S

16S

28S

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Verified step by step guidance

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.