Which of the following statements about mutagens and carcinogens is true?

• A. A mutagen is a chemical or physical agent which causes mutations in DNA.
• B. A carcinogen is chemical or physical agent which causes mutations in DNA that lead to the development of cancer.
• C. All carcinogens are mutagens, but not all mutagens are carcinogens.
• D. All of the above statements are true.

Answer: (D)

Verified step by step guidance

1. Understand the definition of a mutagen: A mutagen is any chemical or physical agent that can cause changes or mutations in the DNA sequence of an organism.
2. Understand the definition of a carcinogen: A carcinogen is a substance capable of causing cancer in living tissue, often through mutations in DNA that lead to uncontrolled cell growth.
3. Analyze the relationship between mutagens and carcinogens: While all carcinogens can cause mutations (making them mutagens), not all mutagens necessarily lead to cancer. Some mutations may not affect cancer-related genes.
4. Evaluate the given statements: Each statement provides a piece of information about mutagens and carcinogens. Consider whether each statement aligns with the definitions and relationships you have reviewed.
5. Conclude that all the provided statements are true based on the definitions and relationships between mutagens and carcinogens, as they accurately describe the nature and effects of these agents.