cell cycle

Pieces of the puzzle…

The GoalThe Goal

To make an identical body cell.

For growth or repair!

To make an identical body cell.

For growth or repair! http://www.msnbc.msn.com/id/12136506/

Cells go through a life cycle known as the cell cycle. The phases of the cell cycle are interphase, mitosis, and cytokinesis.

Interphase

Mitosis

Cytokinesis

http://www.lima.ohio-state.edu/biology/images/interphase.jpg

http://botit.botany.wisc.edu/images/130/Mitosis/Allium_Root_Prep._Slides/interphase.low.jpg

http://www.biologyreference.com/images/biol_01_img0100.jpg

a. G1: initial growthb. S: DNA Replicationc. G2: organelles are

made

“Inter” – between – you drive on the interstate to go between MD and VA

I-PMAT

Interphase - IncreaseInterphase - Increase

a.Centrioles appearb.Nucleus Splitsc.Chromosomes PairI-PMAT

Prophase - pairProphase - pair

a.Centrioles move to opposite endsb.Chromosomes line up in the middlec. Spindle fibers begin to formI-PMAT

Metaphase - MiddleMetaphase - Middle

a.Chromosomes pull apart and move to opposite ends of the cell

I-PMAT

Anaphase - apartAnaphase - apart

a.Telo = Endb.Two new nuclei formc.Chromosomes unravelI-PMAT

Telophase – twins!Telophase – twins!

a. Cell membrane moves inward to create two daughter cellsb. each daughter cell has its own nucleus with identical chromosomes

Cyto = Cell Kinetic = movement

Cytokinesis – CutCytokinesis – Cut

Asexual reproduction gone awry is CANCERHeredity, certain chemicals, and radiation can cause abnormal changes to a cell. The result can be growth and spread of abnormal cells throughout an organism.

Abnormal growths, or tumors can be benign or malignant.Malignant cells may break free and migrate to new locations to form a new tumor.Cancer is not disorganized cell growth. It is a process by which certain cells acquire abnormal size, shape, and abilities.The spread of malignant cells to new locations is known as cancer.