Construction Health and Safety Technician (CHST) Practice Test 2026 – All-in-One Study Guide for Exam Success!

True toxins are substances that can produce harmful effects on biological systems, often leading to significant and lasting damage. When a true toxin enters the body, it can interfere with normal physiological processes, result in cell injury, and potentially lead to cell death. This can manifest in various ways, such as affecting organ function or causing severe and chronic health issues.

In contrast, sensitizers typically provoke an immune response upon repeated exposure, which may not lead to direct cellular damage. The effects of sensitizers can be temporary and often reversible once exposure ceases. Similarly, other options suggest forms of damage that may not be as severe or long-lasting, such as minor irritation or reversible damage, which do not encapsulate the potential for lasting consequences that true toxins can inflict.

Therefore, recognizing that true toxins can lead to permanent damage underscores the seriousness of their impact and the importance of stringent safety measures in environments where exposure might occur.