Biology 1b: Cell Cycle: Mitosis

Medications can be tested on the cancer culture before being injected into the patient.

Medications can be tested on cell cultures instead of being injected into patients unnecessarily. Cancer cells continue to grow in the cultures uncontrollably allowing scientists to test multiple medications on the cancer cells. Specific treatments that are shown to fight the growth of cancer cells in the culture can be used on patients. Cultures are safer to use than injections of unneeded medications into patients.

1. Prophase 2. Metaphase 3. Anaphase 4. Telophase

eukaryotic cells

two cells....identical

sister chromatids line up along the middle of the cell.

the final phase of cell division, between anaphase and interphase, in which the chromatids or chromosomes move to opposite ends of the cell and two nuclei are formed.

first and longest phase of mitosis, during which the chromosomes become visible and the centrioles separate and take up positions on the opposite sides of the nucleus

the third phase of mitosis, during which the chromosome pairs separate and move toward opposite poles

growth of the organism repair of damaged or dead cells reproduction of new cells

The organism would not grow. If an organism were cut or burned, the damaged area would not heal. The organism would not produce new cells.

Before Mitosis begins the cell has already made a identical set of chromosomes. During prophase fibers condense util becoming an X shape. In metaphase the chromosomes become attached to the spindle fiber. Then in anaphase centimeters are split apart while sister chromatids are pulled to opposite poles. Telophase sister chromatid seprate and contain identical copies of DNA

Cancer cells are taken from a living organism and grown in a culture. Cancer cells grow at an uncontrolled rate. Cancer cells do not stop growing when they are touching; they continue growing. Cancer cells grow multiple layers thick. Cancer cell growth differs from normal cell growth and the number of mitotic divisions are unlimited.

Medications can be tested on cell cultures instead of being injected into patients unnecessarily. Cancer cells continue to grow in the cultures uncontrollably allowing scientists to test multiple medications on the cancer cells. Specific treatments that are shown to fight the growth of cancer cells in the culture can be used on patients. Cultures are safer to use than injections of unneeded medications into patients.