Cell Cycle Flashcards
What are the four stages of Mitosis?
Prophase, Metaphase, Anaphase, Telophase
What stage in the cell cycle does cell division occur?
M
What stage in the cell cycle does cell growth occur in?
G1 & G2
What stage in the cell cycle does DNA replication occur in?
S
What stage is the preparation for Mitosis?
G2
What happens during Prophase?
The chromatids are condensing to become visible
What happens during Metaphase?
The chromosomes move towards the equator (middle) of the cell and spindle fibers link the chromatids of each chromosome to opposite poles
What happens during Anaphase?
The chromosomes are pulled apart to the opposite poles by spindle fibers
What happens during Telophase?
2 new nuclei form
What are the stages of interphase?
G1, S, & G2
What is the last part of cell division that is not classified as part of Mitosis?
Cytokinesis
What is the order of the stages of mitosis?
Prophase (P), Metaphase (M), Anaphase (A), Telophase (T) - PMAT
What is the only stage of mitosis that has 2 steps?
Telophase
What does it mean that cancer cells are uncontrollable?
The cell repeats the cell cycle without controlling mechanisms
How much DNA exists in the nucleus after the G2 phase?
The same amount of DNA that is at the end of S phase
DNA is called chromatin in this phase?
Interphase
During what phase of the cell cycle is DNA replicated?
S
What is the longest stage of the cell cycle?
Interphase
In mitosis the two resulting cells are….
identical to the starting cell and identical to each other
Why do human skin cells go through mitosis constantly?
To replace dead or damaged skin cells
What does the starting cell become after it goes through mitosis (Cytokinesis inculded)?
It splits apart to create two new daughter cells
What happens during G1 phase?
Cell growth
What happens during S phase?
The cell replicates its DNA
What happens during G2 phase
The cell grows again and prepares for mitosis
During what phase is DNA called chromatin?
Interphase
How many chromosomes do humans have?
46
Where do the spindle connect onto chromosomes to pull them apart during metaphase?
Centromeres
What happens during the G0 phase?
The cell rests instead of going through the cell cycle again
What happens to DNA during S
It is duplicated
