AP BIOLOGY

Detailed explanation-1: -Cancer is a disease caused when cells divide uncontrollably and spread into surrounding tissues. Cancer is caused by changes to DNA. Most cancer-causing DNA changes occur in sections of DNA called genes. These changes are also called genetic changes.

Detailed explanation-2: -Cancer is an uncontrolled growth of cells leading to phenotypic expression in many forms, from mild to life-threatening. Cancer can develop in many ways, either from DNA damage, a mutation in the DNA or any product of that DNA, or by loss of function of the regulatory and repressor systems in the cycle.[9]

Detailed explanation-3: -Metastasis-literally meaning “new place”-is one of the terminal stages of cancer. In this stage, cancerous cells enter the bloodstream or the lymphatic system and travel to a new location in the body, where they begin to divide and lay the foundation for secondary tumors. Not all cancer cells can metastasize.

Detailed explanation-4: -Cancer is basically a disease of uncontrolled cell division.

Detailed explanation-5: -The spread of cancer cells from the place where they first formed to another part of the body. In metastasis, cancer cells break away from the original (primary) tumor, travel through the blood or lymph system, and form a new tumor in other organs or tissues of the body.