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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

16. Cell Division

Mitosis

Cell Biology

16. Cell Division

Mitosis

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Multiple Choice

In which of the following steps does the cell cross the spindle assembly checkpoint?

Prophase

Prometaphase

Metaphase

Anaphase

Telophase

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Understand the spindle assembly checkpoint: It is a control mechanism that ensures chromosomes are properly attached to the spindle fibers before the cell proceeds with division.

Identify the phases of mitosis: Prophase, Prometaphase, Metaphase, Anaphase, and Telophase.

Recognize that the spindle assembly checkpoint occurs during Metaphase, where the cell checks for proper alignment of chromosomes at the metaphase plate.

During Metaphase, the cell ensures that all chromosomes are correctly attached to the spindle apparatus and aligned at the metaphase plate before proceeding to Anaphase.

Once the checkpoint is passed, the cell can safely proceed to Anaphase, where sister chromatids are separated and pulled towards opposite poles.