Table of contents

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

DNA Transcription

Cell Biology

5. DNA to RNA to Protein

DNA Transcription

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Multiple Choice

Is polycistronic mRNA found in prokaryotic transcription or eukaryotic transcription?

Prokaryotic

Eukaryotic

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Verified step by step guidance

Understand the concept of mRNA: mRNA, or messenger RNA, is a type of RNA that conveys genetic information from DNA to the ribosome, where it specifies the amino acid sequence of the protein products of gene expression.

Differentiate between prokaryotic and eukaryotic cells: Prokaryotic cells, such as bacteria, do not have a nucleus, while eukaryotic cells, such as plant and animal cells, have a nucleus and other membrane-bound organelles.

Define polycistronic mRNA: Polycistronic mRNA is a single mRNA molecule that encodes multiple proteins. It contains multiple open reading frames (ORFs), each of which can be translated into a protein.

Identify where polycistronic mRNA is typically found: In prokaryotic cells, such as bacteria, polycistronic mRNA is common. This allows for the coordinated expression of genes that are part of the same pathway or function.

Contrast with eukaryotic mRNA: In eukaryotic cells, mRNA is typically monocistronic, meaning each mRNA molecule encodes only one protein. This is due to the more complex regulation of gene expression in eukaryotes.