Sunday, February 1, 2009

Mitosis(Cell reproduction)

Over the week at science, we did a lot of theings. Here is what we did:
On monday, we talked about the things that happen mitosis and the stages/phases that occur during Mitosis.
Interphase-the phase that the cell stays in and when the cell copies the DNA/chromosomes for reproducton.
Prophase- Is when the nuclear envelope wears away exposing the sister chromotids.
Metaphase- When the cell's centrioles use the spindle fibers to pull apart the sister chromotids.
Anaphase- Is when the cell's centrioles seperate the sister chromotids and go to the other ends of the dividing cell.
Telophase- Is when the cell's nucleas starts to reform in the prexisting cell and the daughter cell just created.
Cytokinisis-Is when the cell's membrane reforms around both the parent cell and the daughter cell and the cells are now no longer dependent on eachother and Mitosis ends.
Then we had a Quiz on that stuff

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