1 / 6

Mitosis

Mitosis. What happens if it goes wrong?. Section 8.3 Summary – pages 211 - 213. Normal Control of the Cell Cycle. Sometimes the cells don’t stop dividing. This usually happens because of enzymes. Cancer is a malignant growth resulting from uncontrolled cell division.

virginia-ramirez
Download Presentation

Mitosis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Mitosis What happens if it goes wrong?

  2. Section 8.3 Summary – pages 211 - 213 Normal Control of the Cell Cycle • Sometimes the cells don’t stop dividing. • This usually happens because of enzymes. • Cancer is a malignant growth resulting from uncontrolled cell division.

  3. Section 8.3 Summary – pages 211 - 213 Normal Control of the Cell Cycle • Enzyme production is directed by genes located on the chromosomes. • A gene is a segment of DNA that controls the production of a protein.

  4. Section 8.3 Summary – pages 211 - 213 Cancer: A mistake in the Cell Cycle • Currently, scientists consider cancer to be a result of changes in one or more of the genes that produce substances that are involved in controlling the cell cycle. • Cancerous cells form masses of tissue called tumors. • Tumors steal food and gases from normal cells.

  5. Section 8.3 Summary – pages 211 - 213 Cancer: A mistake in the Cell Cycle • In later stages, cancer cells enter the blood and spread throughout the body, a process called metastasis. • This forms new tumors that disrupt the function of organs, organ systems, and ultimately, the organism.

  6. Section 8.3 Summary – pages 211 - 213 The causes of cancer • Genetic causes (that you inherit) • Environmental causes (UV light, asbestos, and other chemicals) • Viruses (HPV)

More Related