Table of contents

1. Overview of Cell Biology2h 49m
2. Chemical Components of Cells1h 14m
3. Energy1h 33m
4. DNA, Chromosomes, and Genomes2h 31m
5. DNA to RNA to Protein2h 31m
6. Proteins1h 36m
7. Gene Expression1h 42m
8. Membrane Structure1h 4m
- The Lipid Bilayer
  38m
- Membrane Proteins
  25m
9. Transport Across Membranes1h 52m
10. Anerobic Respiration1h 5m
11. Aerobic Respiration1h 11m
12. Photosynthesis52m
13. Intracellular Protein Transport2h 18m
14. Cell Signaling1h 28m
15. Cytoskeleton and Cell Movement1h 39m
16. Cell Division3h 5m
17. Meiosis and Sexual Reproduction50m
18. Cell Junctions and Tissues48m
19. Stem Cells13m
- Stem Cells
  13m
20. Cancer44m
21. The Immune System1h 6m
22. Techniques in Cell Biology1h 41m

20. Cancer

Overview of Cancer

Cell Biology

20. Cancer

Overview of Cancer

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Multiple Choice

Which of the following genes normally suppress tumor growth, but when mutated allow for tumor growth?

Carcinogens

Oncogene

Tumor suppressors

Proto-oncogenes

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Verified step by step guidance

Understand the role of tumor suppressor genes: These genes are crucial in regulating cell growth and division. They act as a brake on cell proliferation, ensuring that cells do not divide uncontrollably.

Recognize what happens when tumor suppressor genes are mutated: Mutations in these genes can lead to a loss of function, meaning the 'brake' on cell division is removed, allowing cells to grow and divide unchecked, which can lead to tumor formation.

Differentiate between tumor suppressor genes and oncogenes: Oncogenes are mutated forms of proto-oncogenes, which normally promote cell growth and division. When mutated, oncogenes can lead to excessive cell proliferation.

Identify the correct term: The problem asks for genes that normally suppress tumor growth but allow it when mutated. This description fits tumor suppressor genes, as their normal function is to prevent uncontrolled cell growth.

Conclude with the correct answer: Based on the understanding of the roles and mutations of these genes, the correct answer is 'Tumor suppressors', as they are the ones that suppress tumor growth under normal conditions but can lead to tumor growth when mutated.