Cell Cycle: Mitosis Overview

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Questions and Answers

During which phase do the sister chromatids separate and move to opposite poles of the cell?

  • Prophase
  • Metaphase
  • Anaphase (correct)
  • Telophase

What significant event occurs during the metaphase of cell division?

  • Cytoplasmic division
  • Chromosomes aligning at the metaphase plate (correct)
  • Nuclear envelope reforming
  • Chromosomes condensing into chromatin

Which process directly follows telophase in the cell cycle?

  • Prophase
  • Cytokinesis (correct)
  • Interphase
  • DNA replication

What happens to the DNA during telophase?

<p>It unwinds back into chromatin. (C)</p> Signup and view all the answers

Which structure is involved in the attachment of spindle fibers to chromosomes during metaphase?

<p>Centrioles (D)</p> Signup and view all the answers

Flashcards

Interphase (DNA Replication)

The stage where the cell's DNA is copied, resulting in two identical copies of each chromosome.

Prophase

The first stage of mitosis where the nuclear envelope breaks down, the DNA condenses into chromosomes, and the mitotic spindle forms.

Metaphase

The stage of mitosis where chromosomes line up in the middle of the cell, attached to the spindle fibers.

Anaphase

The stage of mitosis where the sister chromatids are pulled apart to opposite poles of the cell.

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Telophase & Cytokinesis

The final stage of mitosis where the nuclear envelope reforms, the chromosomes unwind, and the cell physically divides.

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Study Notes

Cell Cycle: Mitosis

  • Interphase: DNA replicates, packaging into chromosomes.

  • Prophase:

    • Nuclear envelope breaks down.
    • Chromosomes condense.
    • Mitotic spindle forms.
  • Metaphase:

    • Chromosomes align at the metaphase plate.
    • Spindle fibers attach to chromosomes.
    • Centrioles play a role.
  • Anaphase:

    • Centromeres divide, separating sister chromatids.
    • Spindle fibers pull chromatids to opposite poles.
    • Daughter cells receive identical chromosomes to the parent cell.
    • Spindle fibers separate chromosomes.
  • Telophase:

    • Nuclear envelope reforms.
    • Mitotic spindle breaks down.
    • Chromosomes unwind.
  • Cytokinesis:

    • Cell membrane divides, creating two daughter cells.
    • Cytoplasm and organelles are divided.

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