The Process of How Cells Divide

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Mitosis The Cell Cycle

• The Process of How Cells Divide

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Cell Cycle

• INTERPHASE
• PROPHASE
• METAPHASE
• ANAPHASE
• TELOPHASE

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Cell Cycle
Cell Cycle Animation
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INTERPHASE

• Two new daughter cells grow rapidly
• Each chromosome makes a copy of itself
• Cells prepare to divide
• Longest phase

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PROPHASE

• Chromosomes become visible
• The spindle forms
• Nuclear membrane breaks down

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METAPHASE

• Chromosomes line up in the center of the cell
• Spindle fibers attach to the centromeres (center
  of the chromosome)

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ANAPHASE

• Chromosomes are
• separated by spindle fibers.

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(No Transcript)
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TELOPHASE

• Each half becomes one new cell
• Nuclear membrane reforms
• Cytokinesis

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Telophase Plants vs. Animals

• Animal Cells have cleavage. Cell membrane folds
  in and the cytoplasm pinches.

• Plants form a cell plate between the two daughter
  cells.
• Cleavage does not occur in plant cells

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Plant Telophase
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Animal Telophase
Cleavage
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WHAT NEXT?

• Each new cell begins in interphase (growth)
• Each cell prepares to divide once again

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REVIEW QUIZ

• PREPARE TO ANSWER SOME QUESTIONS ABOUT WHAT YOU
  HAVE JUST LEARNED.

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WHAT IS THE FIRST PHASE OF A CELLS LIFE(HINT
THE NEW DAUGHTER CELLS GO THROUGH WHAT PHASE
FIRST?
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WHEN ALL 46 HUMAN CHROMOSOMES LINE UP IN THE
MIDDLE OF THE CELL, WHAT PHASE IS THE CELL IN?
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WHAT PHASE ENDS MITOSIS?
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WHEN MITOSIS FIRST STARTS, WHAT PHASE IS THE CELL
IN?
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WHAT IS THE DEFINITION OF MITOSIS?
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• The process by which the nuclei
• of one cell is equally divided into
• two daughter cells and chromosome
• number is conserved.