NEET 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: -These cells may form a mass called a tumor. A tumor can be cancerous or benign. A cancerous tumor is malignant, meaning it can grow and spread to other parts of the body. A benign tumor means the tumor can grow but will not spread. Some types of cancer do not form a tumor.