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

question 6

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 that have multiple copies
• B) genes of the bacteria, which are abundant in the colon
• C) genes coding for enzymes that act in the colon
• D) genes that are especially susceptible to mutation
• E) genes involved in control of the cell cycle

---

Definitions:

Central Nervous System

The section of the nervous system consisting of the brain and spinal cord, tasked with interpreting and dispatching nerve signals.

Spinal Cord

A long, thin, tubular structure made up of nervous tissue, extending from the brainstem down the back, conducting signals to and from the brain.

Parasympathetic Division

A division of the autonomic nervous system that is involved in rest-and-digest functions, conserving energy and restoring the body to a state of calm.

Sympathetic Division

A part of the autonomic nervous system that increases the body's readiness for physical action by accelerating the heart rate, constricting blood vessels, and raising blood pressure.