Definition- The process of the cell to divide into new cells.
Interphase
Description- the phase that occurs before cell division, the preparation for cell divisions
Stages:
G1- Rapid growth of the cell, metabolic activity. S- Synthesis, DNA replication. G2- Getting ready for cell division. Centrioles replicate
Mitosis and Cell Division
Function- To grow repair and maintain the cells in the body along with the reproduction of those cells.
Results- Two identical daughter cells form from the parent cell.
Phases of Mitosis
Prophase- Nucleus disappears, chromatin forms into chromosomes. Centrioles start to move to outer poles. Spindle fibers start to form
Metaphase- Centrioles have moved to the outer poles, spindle fibers connect to the centromeres. Chromatids are guided to the middle of of the cell by the spindle fibers.
Anaphase- The centromere is split and the chromatids are pulled to separate poles. While this happens the cytoplasm starts to push in but the division does not come to an end until telophase.
Telophase- In Telophase the chromatids that are now inside the cytoplasm now are formed into what seems like a nucleus.
Mutations
Definition- A permanent change in DNA that can change the genetic information of a gene.
Causes Of Mutation- Pre-genetic cursors can cause the cell to mutate during the process of both mitosis and meiosis.
Cancer
Definition
Causes
Types/Symptoms
Treatments
Rapid cell division among cells.
Environment, genetics, and much more.
Unexplained weight loss, fever, fatigue, aches and pains, skin changes (darkening and lighten.)
Chemotherapy- One or several types of drugs, that attack dividing cells, or stop cells from dividing.
Radiation Therapy- Directing rays of radiation at the affected part of the body. Material could be placed in affected area.
Surgery- Surgery to remove the tumour of the affected area.
Meiosis
Definition- Division of reproductive cells.