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Chapter 8 - intro to cell divison
Dr. Bob Harms introductory biology STLCC
6
Biology
Undergraduate 1
10/04/2010

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Term
Chromatin
Definition
Loosely packed, long and thin, DNA and packaging protein. Cell can get to information
Term
Mitosis is
Definition
One cell dividing into 2 cells from parent cell to daughter cells. Origin of Somatic cells
Term
What is a somatic cell?
Definition
Any cell that isnt a gamete (reproductive cell, egg or sperm)
Term
When a cell is undergoing mitosis, what happens to the DNA?
Definition
It starts off as Chromatin, and gets packaged up into chromasomes. After the cell has split back into 2 it "unpackages" and becomes chromatin again
Term
What is interphase?
Definition
The longer part of a cell's life cycle, where it grows and matures. It's waiting for chemical cues to undergo mitosis. G1 S and G2 stages make up interphase
Term
What happens in each phase of interphase
Definition
G1 - growth 1 - maturing, adding cytoplasm, organellse.
S - synthesizing DNA copy, getting ready for mitosis
G2 - 2nd growth - build proteins, store up energy, prepare for cell division. Will lose access to "road maps" to proteins temporarily.
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