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Biology – Cancer Questions and Answers Latest Version Graded A+
What is the primary difference between normal cells and cancer cells?✔✔ Cancer cells divide uncontrollably and can invade other tissues, while normal cells have regulated growth.
How do carcinogens contribute to cancer development?✔✔ Carcinogens cause mutations in the DNA of cells, which can lead to uncontrolled cell growth and cancer.
What is the role of tumor suppressor genes in preventing cancer?✔✔ Tumor suppressor genes regulate cell division and can trigger apoptosis to prevent the formation of tumors.
What is the process by which cancer cells spread from their original location to other parts of the body?✔✔ The process is called metastasis, where cancer cells move through the blood or lymphatic system to distant organs.
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How does angiogenesis play a role in cancer growth?✔✔ Angiogenesis is the formation of new blood vessels, which supply tumors with nutrients and oxygen, allowing them to grow and spread.
What is the significance of p53 in cancer biology?✔✔ p53 is a tumor suppressor gene that detects DNA damage and can initiate apoptosis to prevent the proliferation of damaged cells.
What is the difference between benign and malignant tumors?✔✔ Benign tumors are non-cancerous and do not spread to other parts of the body, while malignant tumors are cancerous and can invade other tissues.
How can inherited mutations increase the risk of cancer?✔✔ Inherited mutations in genes such as BRCA1 and BRCA2 increase the likelihood of developing certain types of cancer due to the inability to repair DNA damage.
What role do proto-oncogenes play in the development of cancer?✔✔ Proto-oncogenes normally promote cell growth, but when mutated or overexpressed, they become oncogenes that drive uncontrolled cell division, leading to cancer.
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