Mitosis
What happens to a cell when it is undergoing mitosis?
It divides.
The % of time in the cell cycle that is spent in Interphase.
80 - 90%
A defining characteristic of a stem cell is that it can either self-renew or _________________.
Differentiate
A mass of irregular shaped cells with multiple large nuclei.
Cancer
An environmental factor that can impact the color of hair on rabbits.
Temperature
How many phases does mitosis have?
4 phases
The organelles duplicate during this part of Interphase.
G1 phase.
Another word for self-renew is _________ and another word for differentiate is _____________.
copy or replicate, specialize
The incidence of skin cancer in the South (USA) is increased due to ___________.
ultraviolet light (UV)
An environmental factor that can affect the rate of metamorphosis in tadpoles
Amount of rainfall / drought
The chromosomes line up along the equator during this phase.
Metaphase
The cell structures which are being replicated during this phase.
DNA / chromosomes
The benefit of stem cells for the human body is to grow, __________ and _________.
repair, renew (replace)
A mass of cells that is NOT cancerous
benign
An environmental factor which can cause birth defects
pollutants, medications or toxins
The chromosomes are pulled away from each other during this phase.
Anaphase
During this phase the cell continues to grow and proteins are replicated, preparing the cell for division.
G2 phase
One way stem cell research helps humans is to provide healthy cells in place of damaged cells; this process is called ____________.
transplant
The reason why damaged cells should not grow and divide.
Defects are passed on to the newly divided cells.
The prodcuction of red blood cells can be impacted by this environmental factor.
Low oxygen levels
The final phase of mitosis which means "cell movement"
Cytokinesis
The purpose of the checkpoint at the end of the G1 phase.
It checks whether the cell is big enough and has made the proper proteins for the synthesis phase.
Cells which can become any type of specialized cell are the embryonic stem cells and the ________ stem cells.
pluripotent
Prevents organs and other normal cells from functioning properly.
Cancer
The end result of certain environmental factors if the organism or cells do not adapt.
Defects or death