Stuff on the Bio Test Flashcards
Cells dividing uncontrollably
Cancer
Division of prokaryotes is called
binary fission
Simple steps to binary fission
Duplication of the chromosome and separation of the copies. These copies then divide
How does binary fission compare to mitosis
Binary fission occurs primarily in prokaryotes (bacteria), while mitosis only occurs in eukaryotes
Why do cells divide
Growth, repairing, and reproduction
The first checkpoint of the cell cycle does what
Checks the integrity of the DNA
Second checkpoint does what
Proper chromosome duplication is assessed at checkpoint 2
Third checkpoint does what
Assess the attachment of kinetochore to a spindle fiber
Entire complex consisting of roughly the same amount of DNA and protein
Chromatin
One of the two identical parts of a duplicated chromosome in a eukaryotic cell
SIster chromatids
What holds the sister chromatids together
Centromere
(of a cell or nucleus) having a single set of unpaired chromosomes.
haploid
What tumors don’t leave the original site
Benign
tumors are mass of abnormally reproducing cells that can spread and invade other healthy organs of the body
Malignant
If the cancer cells spread it is called
METASTASIS