Unit 1 - Metaphase to Anaphase Flashcards
What is Cell Theory?
All Organisms are made of Cells(1), Existing Cells are a basic unit of life(2), Cells are derived from other cells(3)
What does cell division replace?
Replaces adult cells who are worn out and went through cell death
What are daughter cells?
The Two cells created in cell division which are genetically Identical
What is Mitosis?
The process in cell division that replicates a cell into two daughter cells which are genetically identical
Where is the copy of our dna stored?
In chromosomes
What are homologs?
A chromosomal pair, where 1 is maternal material, and the other one is paternal material
What are sister chromatids?
The result of the replication of each chromosome piar (replication of mom, and dad)
When is the homolog replicated to make two identical copies?
Prior to Mitosis
What percent of cells get the signal that triggers chromosomal replication(mitosis)
around only 1%
What occurs in prophase?
Chromosomes condense and SF get ready
What occurs in metaphase?
Spindle Fibers attach to Sister Chromatids then find kinetochores (move through the motors attached to the kinetochores), Signal that all Spindle Fibers are attached to the Kinetic Chores, signals Metphase is completed.
What occurs in Anaphase?
Signal from KC + SP attached tells the SP to start pulling sister chromatids apart with their motors.
What occurs in Telophase?
Nuclei starts to reform around each of the groups of chromatids on opposite poles of the cell. The cell pinches in the middle called cytokinesis.
Why is the metaphase to anaphase process so vulnerable to cause cancer cells?
Because it is the process which divdies the two chromsomes into the seperate daughter cells, if one is misplaced or left behind a cancer cell is created.
What is a Kinetochore?
Large protein which is placed in the middle of the cell, a target point for all of the spindle fibers to attach with once connected to the Sister Chromatids
