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

Previous problemNext problem

Struggling with Cell Biology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Tumor angiogenesis can be affected by which of the following factors?

Secretion of vascular endothelial growth factor (VEGF)

Decreased glycolysis in tumor cells

Enhanced DNA repair mechanisms

Increased lysosomal enzyme activity

Previous problemNext problem

Verified step by step guidance

Understand the concept of tumor angiogenesis: Tumor angiogenesis refers to the process by which tumors stimulate the formation of new blood vessels to supply oxygen and nutrients, enabling their growth and survival.

Identify the key factor involved in angiogenesis: Vascular endothelial growth factor (VEGF) is a signaling protein that plays a critical role in promoting angiogenesis by stimulating endothelial cell proliferation and migration.

Analyze the options provided: Evaluate each option to determine its relevance to angiogenesis. For example, secretion of VEGF directly promotes angiogenesis, while decreased glycolysis, enhanced DNA repair mechanisms, and increased lysosomal enzyme activity are not directly related to the formation of new blood vessels.

Focus on VEGF: Recognize that VEGF secretion is a well-established mechanism by which tumors induce angiogenesis, making it the most relevant factor among the options provided.

Conclude the reasoning: Based on the biological role of VEGF in angiogenesis, determine that the secretion of VEGF is the correct answer to the question.