Cycles of Cell Cycle
General Mitosis
Cancer
Cell Division
HeLa Cells
100
What occurrence within the cell does the cell cycle represent?
Cell division
100

How many phases make up mitosis?

4 + cytokinesis

100

Description of cancer.

Uncontrolled cell division and growth 

100

The part of the chromosome that the spindle fiber attaches to.

Centromere

100

This vaccine was discovered using HeLa's cells.

Polio vaccine

200
What is the longest phase in the cell cycle?
Interphase
200
During interphase, DNA has replicated and appears as a loosely coiled mass known as ___________.
Chromatin
200

Name causes for cancer.

Environmental; pollution, pesticide runoff and radiation

Mutations

200
At which phase do the chromosomes become visible in the cell?
Prophase
200

The number of chromosomes present in a normal cell compared to that of the HeLa cells.

Normal cells have 46 chromosomes, and HeLa cells have about 76-80 mutated chromosomes.

300
The cell cycle results in two genetically _________ cells.
Identical
300
True or False: Interphase is not included in the phases of mitosis.
True
300

The job of a checkpoint.

A checkpoint is a stop along the cell cycle to make sure there are no mutations.

300
In which phase do the nuclear envelopes reform around the separated chromosomes?
Telophase
300

The number of cell divisions a normal cell can go through compared to HeLa cells.

Normal cells divide 40-50 times however HeLa cells divide indefinitely. 

400

The cell cycle state where the cell grows to its full size, copies the DNA and organelles and prepares to divide is called the ________________.

G1 and G2 of interphase.

400
Spindle fibers attach to the centromeres and chromosomes line up in the middle of the cell during this phase of cell division.
Metaphase
400

This enzyme is in charge of allowing chromosomes to continuously divide.

Telomerase rebuilding telomeres.

400
At what phase in cell division do the spindle fibers pull the chromosomes to opposite poles of the cell?
Anaphase
400

The importance of p53 gene. 

p53 is the guardian of the genome, in charge of making sure no mutations are occurring in the cell.

500
What is the importance of the cell cycle to multicellular organisms with respect to tissue repair?
The cell cycle replaces damaged, worn, and aging cells
500

List the phases of mitosis in order.

Prophase, Metaphase, Anaphase, Telophase, Cytokinesis

500

Describe the analogy used to refer to cell division and explain how it best connects. 

Cell division is like driving a car; there are accelerators that control the speed of the dividing process and brakes to stop for checkpoints.

500

This is attached to the spindle fibers that first appear in prophase.

Centrioles

500

Explain who Rebecca Skloot was and why she was important in the story.

Rebecca was the author of a book that helped the family understand the use and importance of HeLa cells from life to death.

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