In Colorectal Cancer, Several Genes Must Be Mutated for a Cell

question 24

Multiple Choice

In colorectal cancer, several genes must be mutated for a cell to develop into a cancer cell. Which of the following kinds of genes would you expect to be mutated?

• A) genes coding enzymes that act in the colon
• B) genes involved in control of the cell cycle
• C) genes that are especially susceptible to mutation
• D) genes regulating cell division in colon bacteria

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Definitions:

Periderm

The outer protective layer of a plant's bark, produced as part of secondary growth, replacing the epidermis in mature plant stems and roots.

Xylem

The vascular tissue in plants responsible for the conduction of water and nutrients from the roots to the leaves.

Herbaceous Stems

Stems that are soft, green, and flexible, typically found in plants that do not produce wood and die back at the end of the growing season.

Epidermis

The outermost layer of cells covering an organism, particularly in plants where it forms a protective barrier against environmental damage.