Cells from Advanced Malignant Tumours Often Have Very Abnormal Chromosomes

question 63

Multiple Choice

Cells from advanced malignant tumours often have very abnormal chromosomes and an abnormal number of chromosomes. What might explain the association between malignant tumours and chromosomal abnormalities?

• A) Cancer cells are no longer density-dependent.
• B) Cancer cells are no longer anchorage-dependent.
• C) Cell cycle checkpoints are not in place to stop cells with chromosome abnormalities.
• D) Transformation introduces new chromosomes into cells.

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Definitions:

SARA

The Superfund Amendments and Reauthorization Act, a 1986 US federal law that amended the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) to manage and clean up hazardous waste sites.

Hazardous Substances

Materials that can pose a risk to health, safety, and the environment if not properly handled or contained.

CEQ

Council on Environmental Quality, a federal agency that advises the United States president on environmental policy and issues.

Chlorofluorocarbons

Chemical compounds that were widely used as refrigerants and aerosol propellants until they were found to deplete the ozone layer.