
Concept explainers
a.
To determine:
Whether one can get convinced to avoid exposure to a certain chemical that is supposed to be a carcinogen after listening to stories of a person developing cancer after exposure to that certain chemical or not.
Introduction:
Cancer is a deadly disease that is caused by different carcinogenic agents. It can affect tissues from any part of the body. A cancerous cell undergoes uncontrolled division and forms a tumor.
b.
To determine:
The ways by which a chemical is identified as carcinogenic in humans along with the reason for the difficulty in concluding with certainty that the chemical is safe.
Introduction:
Cancer is caused by different chemical and environmental factors. These cancer-causing factors are called carcinogenic factors. They bring changes in the genetic makeup of the cell. This change causes the cells to divide uncontrolled and form a tumor.

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Chapter 8 Solutions
Biology: The Essentials
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