cell division l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Cell Division PowerPoint Presentation
Download Presentation
Cell Division

Loading in 2 Seconds...

play fullscreen
1 / 19

Cell Division - PowerPoint PPT Presentation


  • 197 Views
  • Uploaded on

Cell Division. Chromosomes. Are made of DNA Each chromosome consists of sister chromatids attached at a centromere. Cell Cycle. During the cell cycle, a cell grows, prepares for division, and divides to form 2 daughter cells, each with each of which then begins the cycle again.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Cell Division' - emily


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
chromosomes
Chromosomes
  • Are made of DNA
  • Each chromosome consists of sister chromatids attached at a centromere
cell cycle
Cell Cycle
  • During the cell cycle, a cell grows, prepares for division, and divides to form 2 daughter cells, each with each of which then begins the cycle again.
  • Interphase – time for growth and regular cell activity.
  • Most of a cells life is spent in Interphase.
mitosis
Mitosis
  • The division of somatic or regular cells.
  • Its divided into 4 phases.
  • Remember Interphase is NOT part of Mitosis.
prophase
Prophase
  • First stage of Mitosis
  • Chromatin condenses into chromosomes
  • Centrioles separate and a spindle fiber begins to form.
  • Nuclear membrane breaks down
metaphase
Metaphase
  • Second Phase of Mitosis
  • Chromosomes line up in the middle of the cell.
  • Each chromosome is connected to a spindle fiber.
anaphase
Anaphase
  • Third Phase of Mitosis
  • The sister chromatids separate into individual chromosomes and move apart to opposite ends of the cell.
telophase
Telophase
  • Fourth and Final Stage of Mitosis
  • Chromosomes gather at opposite ends of the cell and lose their distinct shapes
  • Two new nuclear membranes have formed.
cytokinesis
Cytokinesis
  • The cytoplasm pinches in half.
  • Each daughter cell has an identical set of duplicate chromosomes
regulating the cycle
Regulating the Cycle
  • A protein call cyclin helps regulate the cell cycle in eukaryotic cells.
  • They respond to internal and external events. These proteins are regulators.
when things go wrong
When Things Go Wrong
  • Cancer cells do not respond to the signals that regulate the growth of most cells.
  • As a result, they form masses of cells called tumors that can damage surrounding tissues.