Cell Size
What must happen before a cell can divide?
DNA Replicate
What has to happen before a cell can divide
DNA Must be replicated
What stage of the cell cycle do cells spend most of their life in
Interphase
What is the first step of mitosis and what happens during this phase
Prophase--chromatin condenses and chromosomes become visible
Sister Chromatids
Exact copies of DNA that are joined at a centromere
What happens if nutrients can't get into the middle of the cell
The cell dies
What happens if cells do not divide
They die
What are the three phases of interphase
G1 S G2
what is the 2nd step of mitosis and what happens during this step
Metaphase--Chromosomes line up along the middle of the cell
Centriole
Organizes mitosis, spindle fibers originate here
Can cells grow indefinitely
NO
What happens during the G1 and G2 phases of interphase
What is the 3rd step of mitosis and what happens during this step
Anaphase--spindle fibers start to pull chromosomes apart from the centromere
Centromere
Does a cell with a larger radius or smaller radius have a longer life expectancy
Smaller
If a cell becomes too big, how does it affect the DNA
Overloads it
What happens during the S phase of interphase
The DNA is copied
What is the fourth and final step of mitosis? What happens during this step?
Telophase--Nuclear envelope starts to reform and chromatin decondenses
Chromosome
Carries all genetic information in the body
What are the two main factors that limit cell size
Surface Area v. Volume and DNA Overload
Why do cells need to divide
Because of surface area v. volume and DNA overload
What two steps of the cell cycle belong to the M phase
Mitosis and Cytokinesis
What is the final stage of the cell cycle and how does it differ between plant and animal cells
Cytokinesis--Plant Cells use a cell plate instead of pinching into two new cells
tightly coiled DNA that makes up chromosomes