3. Energy & Cell Processes
Cancer
3. Energy & Cell Processes
Cancer
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- Multiple Choice
The difference between benign and malignant tumors is:
a) Malignant tumors do not spread to other sites.
b) Benign tumors have not lost growth control.
c) Benign tumors have not spread to other sites.
d) Malignant tumors have not lost growth or control.
- Multiple Choice
Which of the following processes do normal proto-oncogenes typically exhibit?
a) They normally suppress tumor growth.
b) They enhance tumor growth.
c) They stimulate normal cell growth and division.
d) They are underexpressed in cancer cells.
- Multiple Choice
When activated by signals in the cell, Protein X can stop cells from growing and dividing into new cells. What type of gene codes for Protein X?
a) Oncogene.
b) Tumor-suppressor gene.
c) Protein kinase gene.
d) Protein Vesicle gene.
e) Proto-oncogene.
- Multiple ChoiceWhat is the difference between a benign tumor and a malignant tumor?
- Open QuestionDescribe three ways that cancer cells differ from normal cells.
- Open QuestionVinblastine is a standard chemotherapeutic drug used to treat cancer. Because it interferes with the assembly of microtubules, its effectiveness must be related toa. disruption of mitotic spindle formation.b. suppression of cyclin production.c. myosin denaturation and inhibition of cleavage furrow formation.d.inhibition of DNA synthesis.
- Open QuestionOne difference between cancer cells and normal cells is that cancer cellsa. are unable to synthesize DNA.b. are arrested at the S phase of the cell cycle.c. continue to divide even when they are tightly packed together.d. cannot function properly because they are affected by density-dependent inhibition.
- Open QuestionEvaluate each of the following defects. Which could lead to uncontrolled growth in cancer? Select True or False for each statement.T/FThe overexpression of MPF activity.T/FA nonfunctional Rb protein.T/FThe overexpression of G1 cyclin.T/FA nonfunctional E2F protein.