Mitosis
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Mitosis. The Cell CYCLE consists of Interphase and MITOSIS (division of the nucleus). Most of the time the cell is in INTERPHASE as the cell prepares for division. C. M. G2. S. G1. INTERPHASE. The cell’s chemical machine operates and the cell grows (G 1 phase).

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Mitosis

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Mitosis

Mitosis


Mitosis

The Cell CYCLE consists of Interphase and MITOSIS (division of the nucleus). Most of the time the cell is in INTERPHASE as the cell prepares for division.


Mitosis

C

M

G2

S

G1


Interphase

INTERPHASE

  • The cell’s chemical machine operates and the cell grows (G1 phase).

  • The SYNTHESIS of DNA (S phase).

  • PREPARE for cell division


Mitosis1

MITOSIS

1. The chromatin CONDENSES (shortens) into chromosomes.

Chromatin vs. Chromosomes

  • Long/thin

  • Invisible

  • Active

  • Working cell

  • Short/thick

  • Visible

  • Inactive

  • Dividing cell


Mitosis

  • The nuclear membrane and nucleolus DISAPPEAR.

  • Centrioles move apart to opposite ends of the cell.

  • SPINDLE fibers from the centrioles attach to centromeres.


Chromosomes

Chromosomes


Metaphase

Metaphase

1. Chromosomes line up on the EQUATOR of the cell.


Anaphase

Anaphase

  • Centromere SPLITS.

  • Chromosomes are PULLED to the ends of the cell.


Telophase

Telophase

  • Chromosomes ARE AT the ends of the cell.

  • Chromosomes DECONDENSE (lengthen) to form chromatin.

  • The nuclear membrane and nucleolus REAPPEAR.

  • The centrioles SEPARATE.

  • The CYTOPLASM is divided. (Cytokinesis)


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