Cell Cycle-Interphase
3 things that happen during interphase
cell grows, duplicates organelles, copies (synthesizes) DNA
Which phase does the cytoplasm divide?
Mitosis phase, that includes cytokinesis
An exact copy of a chromosome attached at the centromere
Chromatid
What must happen before a cell can move from Gap2 to mitosis
It must pass a critical checkpoint
As a cell grows, what increases
It's volume
What happens during S phase
DNA Synthesis
What is mitosis used for?
to reproduce a cell
A protein that helps DNA to coil
Histone
What are two types of enzymes that control the cell cycle?
kinases and cyclins
As a cell grows, the surface to volume ratio..
decreases
What parts of the cell cycle do the critical checkpoints occur?
G1-->S and G2-->Mitosis
What step in mitosis do the chromosomes align at the equatorial plate
Metaphase
Loosely coiled DNA in the nucleus during interphase
Chromatin
Proteins that stimulate a cell to divide
Growth Factor
If a cell cannot move enough material through its membrane to survive, then the surface area to volume ratio is
too small
What does G1 and G2 phase have in common?
cellular growth
What step of mitosis do the chromosomes get pulled to opposite ends?
Anaphase
An organelle that makes microtubules that pull chromosomes during mitosis
Centrosome
What is the name for programmed cell death?
Apoptosis
Why do cells lining the stomach divide more quickly than those in the liver
they undergo more wear and tear
What phase does the cell remain at rest?
GO
Describe the events that take place in prophase?
nuclear envelop disintegrates, chromosomes condense
Repeated units of DNA on the ends of chromosomes that protect the DNA from decay
Telomeres
They can cause cancer in other parts of the body.
Malignant tumor
Name for cells that divide uncontrollably
cancer