How are viruses associated with the development of cancer? A. Viruses infect a c
ID: 73198 • Letter: H
Question
How are viruses associated with the development of cancer?
A. Viruses infect a cell and then integrate their own RNA or DNA into that of the host cell, which changes the host cell's genes and can initiate carcinogensis.
B. Viruses such as HPV, EBV and HBV insert tumor supressor genes such as Tp53 and Rb-1 into parts of the host cell genome where they do not belong.
C. The DNA or RNA in the virus integrates with the cell's DNA, triggering antigenic changes that allow the infected cell to be recognized by cells of the immune system.
D. Viruses hijack the host cell's DNA, forcing the cell to produce many thousands of copies of the virus until the cell explodes through apoptosis.
E. Cancers are infectious diseases spread by viruses.
Explanation / Answer
A. Viruses infect a cell and then integrate their own RNA or DNA into that of the host cell, which changes the host cell's genes and can initiate carcinogensis. ---------> TRUE
B. Viruses such as HPV, EBV and HBV insert tumor supressor genes such as Tp53 and Rb-1 into parts of the host cell genome where they do not belong. -------------> FALSE (Viruses such as HPV, EBV and HBV inactivate the tumour supressor genes).
C. The DNA or RNA in the virus integrates with the cell's DNA, triggering antigenic changes that allow the infected cell to be recognized by cells of the immune system. ----------> FALSE (cancer cells generally escapes from being recognized by the immune system).
D. Viruses hijack the host cell's DNA, forcing the cell to produce many thousands of copies of the virus until the cell explodes through apoptosis. -----------> FALSE (Apoptosis is inhib
A. Viruses infect a cell and then integrate their own RNA or DNA into that of the host cell, which changes the host cell's genes and can initiate carcinogenesis. ---------> TRUE
B. Viruses such as HPV, EBV and HBV insert tumour suppressor genes such as Tp53 and Rb-1 into parts of the host cell genome where they do not belong. -------------> FALSE (Viruses such as HPV, EBV and HBV inactivate the tumour suppressor genes).
C. The DNA or RNA in the virus integrates with the cell's DNA, triggering antigenic changes that allow the infected cell to be recognized by cells of the immune system. ----------> FALSE (cancer cells generally escapes from being recognized by the immune system).
D. Viruses hijack the host cell's DNA, forcing the cell to produce many thousands of copies of the virus until the cell explodes through apoptosis. -----------> FALSE (Apoptosis is inhibited in cancer cells)
E. Cancers are infectious diseases spread by viruses. ----------> FALSE (Cancer is not infectious).
ited in cancer cells)
E. Cancers are infectious diseases spread by viruses. ----------> FALSE (Cancer is not infectious).
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