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Cell Division

Published on Nov 16, 2016

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1.

Cell Division

When cells split apart - it's the "cycle" of life
Photo by Ano Lobb. @healthyrx
2.

Eventually cells need to duplicate and the two methods of replication are...

Photo by hyperion327
3.

Mitosis and Meiosis

Photo by TheJCB
4.

First: Mitosis

My toes is made this way, my hair is made this way, my leg, my arm, my stomach
Photo by TheJCB
5.

The big idea to remember is that mitosis is the simple duplication of a cell and all of its parts.

Photo by shaggy359
6.

Mitosis summary

  • For growth
  • Replaces worn out or damaged cells
  • One cell becomes two
  • Complete cell with all the organelles AND the DNA
Photo by TheJCB
7.

There are five (5) basic phases in the life-cycle of a cell.



Link to Video: https://youtu.be/AhgRhXl7w_g
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8.

Mitosis Purpose

Growth and replacing worn out or damaged cells


Link to Video: https://youtu.be/f-ldPgEfAHI
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9.

Meiosis

Makes me and you!
Photo by TheJCB
10.

Meiosis happens when it's time to reproduce an organism.

Photo by Hammonton Photography
11.

Meiosis has two divisions - four cells are created where there was just one.

Photo by Swamibu
12.

That's four (4) cells with half of the amount of DNA needed by a cell. When a cell goes through meiosis, it's not concerned about creating another working cell. Meiosis is the great process that shuffles the cell's genes around.

Photo by Alex Giron
13.

This is sexual reproduction - it's how life goes on for plants and animals



Link to Video: https://youtu.be/toWK0fIyFlY
Play Video
14.

Humans have 46 chromosomes

You got 23 from dad and 23 from mom
Photo by Hey Paul Studios

Tammy Hershey