Friday, October 14, 2011

Cell Cycle

Hey guys, it's Eunice Lee :D


Today in class we searched for phases of Interphase and Mitosis in an onion cell. We also counted how many cells were in different phases!

In Interphase there is the G1, S, and G2 phase.
In G1, the cell does most of it's growing.
In S-phase, the DNA is replicated and there is twice as much DNA.
In G2, organelles are produced and the cell prepares for the M phase, or Mitosis.

In Mitosis there is Prophase, Metaphase, Anaphase, and Telophase.
Prophase is the longest phase, the nucleus condenses and the chromosomes can be seen. Then, the spindle starts forming.
Metaphase is the shortest phase, the chromosomes gather in the center of the cell and line up. The middle of the chromosome is the centromere which are connected to spindle fibers.
Anaphase, the chromosomes are separated and move to the ends of the cell by the spindle fibers.
Telophase, the chromosomes spread out and the nucleolus starts to form in the cell.

Also remember to post your Muddiest Point by MIDNIGHT!
And Comment on a post before MONDAY BY MIDNIGHT!

Have fun at Homecoming :)

Next Scribe is Kara

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