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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

1. Overview of Cell Biology

Prokaryotic Cell Architecture

Cell Biology

1. Overview of Cell Biology

Prokaryotic Cell Architecture

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Multiple Choice

Compare the two cells shown in this image. Which of the following statements is correct?

Cell A contains circular DNA within a nucleus.

Cell A contains a nucleus, while Cell B does not.

Both cells contain membrane-bound organelles.

Cell B has a peptidoglycan cell wall, while Cell A does not.

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Examine the characteristics of Cell A and Cell B. Determine whether each cell has a nucleus, circular DNA, or membrane-bound organelles.

Recall that eukaryotic cells (like Cell A) typically have a nucleus and linear DNA, while prokaryotic cells (like Cell B) lack a nucleus and have circular DNA.

Understand that membrane-bound organelles, such as mitochondria and the endoplasmic reticulum, are present in eukaryotic cells but absent in prokaryotic cells.

Review the structural differences in cell walls: Prokaryotic cells (like Cell B) often have a peptidoglycan cell wall, while eukaryotic cells (like Cell A) do not.

Compare the provided statements to the observed characteristics of the cells. Identify the statement that aligns with the known differences between eukaryotic and prokaryotic cells.