Mitosis

• Cytology is the branch of science that deals with the study of "Cells"
• Robert Hooke is the scientist that discovered cells
• Cell Division


  • Mitosis
  • Meiosis
• Mitosis


  A part of the cell cycle in which chromosomes in a cell nucleus are separated into two identical sets of chromosomes, and each set ends up in its own nucleus

  
• Mitosis


  1. Prophase

  2. Metaphase

  3. Anaphase

  4. Telophase
• Prophase


  • Condensed chromosomes are formed
  • Nucleoli and nuclear membrane disappear
  • Spindle fibers are formed

  
• Metaphase


  • Rod-shaped double-stranded chromosomes arrange themselves at the equatorial plate
  • Kinetochores attaching the chromosomes to the spindle fibers
• Anaphase


  • The centromeres divide and chromatids separate and move towards the corresponding poles

  
• Telophase


  • Daughter chromosomes arrive at the poles and microtubules disappear
  • The condensed chromatin expands and nuclear envelope reappears
  • Cytokinesis- cytoplasm divides
  • Two daughter cells

  
• G1 phase - growth phase where cells grow larger and increase their cytoplasmic content
• Interphase consists of three stages: G1, S, and G2
• The cell cycle is the series of events that occur between one mitotic division and the next.
• Cell Cycle Stages: Interphase, Prophase, Metaphase, Anaphase, Telophase, Cytokinesis
• Mitotic cell cycle has four phases: prophase, metaphase, anaphase, telophase
• S Phase is when DNA synthesis occurs.
• Mitosis is the process by which eukaryotic cells divide into two identical daughter cells.
• Mitosis is a type of cell division done by most of your body cells and it's really important for your cells to divide
• If cells didn't divide, you wouldn't grow
• Mitosis


  The process that allows cells to grow and repair damage
• Mitosis is not the process that makes sperm or egg cells, that is called meiosis
• Mitosis


  Produces identical body cells
• Cells are not dividing all the time, they spend most of their time in interphase
• Cancer


  Uncontrolled cell growth, or uncontrolled mitosis
• Nucleus


  Organelle that holds the cell's DNA
• Chromosomes


  Condensed units of DNA and protein found in the nucleus
• Humans have 46 chromosomes in their body cell nuclei
• Mitosis


  1. Prophase

  2. Metaphase

  3. Anaphase

  4. Telophase
• Spindles help move the chromosomes to the opposite ends of the cell during anaphase
• Cytokinesis is responsible for the final separation into two cells after the mitosis stages
• Understanding mitosis is important for understanding growth, repair, and cancer
• Mitosis is a type of cell division done by most of your body cells and it's really important for your cells to divide
• If cells didn't divide, you wouldn't grow
• Mitosis is great for repair of damage
• Mitosis


  Not the process that makes sperm or egg cells, that's meiosis
• Mitosis


  Produces identical body cells
• Cells are not dividing all the time, they spend most of their time in interphase
• Cancer is uncontrolled cell growth, which is uncontrolled mitosis
• Nucleus


  Organelle that holds the DNA
• DNA is organised into condensed units called chromosomes to make it easier to move during cell division
• Humans have 46 chromosomes in their body cell nuclei