Exam 24: Cancer Cells

________ and ________ have been demonstrated to trigger DNA mutation associated with particular geographical cancers.

A key adhesion molecule is ________,which decreases cell adherence when present in insufficient quantities.

The Ames test is characterized by the use of

The presence of ________ in the microenvironment of cancer cells acts a potent inhibitor of cell proliferation.

Which scientist(s)was/were awarded a Nobel prize 50 years after discovering viral oncogenesis?

Using polyethylene glycol,a cancer cell and a normal cell are fused. The resulting hybrid behaves like a normal cell. The best reason for this observation is the

Familial adenomatous polyposis coli (APC)is characterized by a small deletion in chromosome 5. In which cells is this deletion present in affected individuals?

With regard to cancer cells in the process of metastasis to secondary sites,which of the following statements is not correct?

The difference between benign and malignant tumors is that

In actively dividing cancer cells,________ often results,as three or more poles may be present during mitosis.

Which of the following statements regarding cancer is false?

The group of proteins associated with the binding of cells to the extracellular matrix are the

During microscopic examination of potential cancer cells,some of the cells are graded as anaplastic. This means they

The branch of medicine that investigates the occurrence and distribution of diseases is

Overexpression of ________ lead to the development of cancer in mice,and variations in their structure or amounts have been documented in various types of cancer cells.

Increased ________ concentrations degrade the basal lamina and extracellular matrix and activate matrix metalloproteinases.

A new compound developed in the lab was tested as a DNA mutagen. When the Ames test was performed,the results were numerous bacterial colonies following exposure. This result means

In a normal cell,cell death typically occurs in which phase of the cell cycle?

Which of the following with regard to cancer cells is false ?

PAHs (polycyclic aromatic hydrocarbons)found in tobacco smoke preferentially bind to regions within the ________ and trigger base substitutions.