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Kanal postlari
Which of the following best describes the concept of 'tumor heterogeneity'?
| 2 | Which of the following is a direct consequence of the activation of hypoxia-induced factor 1α (HIF-1α) in tumor cells? | 625 |
| 3 | What is the significance of the Philadelphia chromosome in chronic myelogenous leukemia? | 404 |
| 4 | Which inherited condition is associated with a defect in DNA mismatch repair, increasing the risk for the development of cancer? | 352 |
| 5 | What is the role of the TP53 gene in the context of apoptosis? | 330 |
| 6 | What is the primary mechanism by which cancer cells achieve replicative immortality? | 329 |
| 7 | Which factor is activated under hypoxic conditions in tumors and leads to the transcription of VEGF genes, promoting angiogenesis? | 335 |
| 8 | During the process of metastasis, what is the sequence of steps that tumor cells undergo? | 355 |
| 9 | Which gene is primarily involved in the intrinsic pathway of apoptosis and is often found activated in follicular lymphoma, protecting tumor cells from apoptosis? | 347 |
| 10 | What is the clinical significance of the HER2/neu receptor in breast cancer? | 387 |
| 11 | Which of the following best describes the role of driver mutations in cancer? | 376 |
| 12 | In the context of cancer, what is the significance of the 'two-hit hypothesis' for tumor suppressor genes? | 356 |
| 13 | Which gene is commonly mutated in human cancers and plays a crucial role in cell cycle arrest and DNA repair? | 343 |
| 14 | What distinguishes oncogenes from proto-oncogenes? | 367 |
| 15 | Which of the following is a fundamental principle of oncogenesis? | 361 |
| 16 | What percentage of all human cancers is constituted by hereditary cancers? | 369 |
| 17 | Which enzyme family plays a crucial role in the activation of carcinogens to ultimate carcinogens within the liver? | 372 |
| 18 | What is the primary cause of skin cancer as identified in the study of carcinogenic agents? | 375 |
| 19 | Which lifestyle factor has been directly linked to a reduction in breast cancer risk according to epidemiological studies? | 367 |
| 20 | Which carcinogenic agent is responsible for the majority of lung cancer cases attributable to occupational exposure? | 70 |
