Cancer

• What are the two types of tumors mentioned?

  Benign and malignant tumors
• What is the key feature of benign tumors?

  They do not invade other parts of the body and are contained in one area.
• How do malignant tumors differ from benign tumors?

  Malignant tumors invade neighboring tissues and can spread to form secondary tumors.
• What happens to malignant tumor cells once they enter the bloodstream?

  • They spread to different parts of the body
  • They form new tumors called secondary tumors
• What is a key fact about the process of mitosis?

  It is tightly controlled by genes in the nucleus.
• What can lead to uncontrolled growth and mitosis?

  Changes in genes that control cell division.
• What are some genetic risk factors for developing cancer?

  • Certain types of breast cancer
  • Prostate cancer
  • Cancer of the large intestine
• What lifestyle factors are linked to certain cancers?

  • Lung cancer linked to smoking
  • Skin cancer linked to ultraviolet light exposure
  • Mouth and throat cancer linked to alcohol consumption
• What is radon and how does it relate to cancer risk?

  Radon is a radioactive gas that increases lung cancer risk by damaging DNA.
• What is the consequence of DNA damage caused by ionizing radiation?

  • Uncontrolled cell division
  • Potential development of cancer