NURSING EXAM QUESTIONS
TOXICOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Producers
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Primary Consumers
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Secondary Consumers
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Autotrophs
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Detailed explanation-1: -Human health effects from DDT at low environmental doses are unknown. Following exposure to high doses, human symptoms can include vomiting, tremors or shakiness, and seizures. Laboratory animal studies showed effects on the liver and reproduction. DDT is considered a possible human carcinogen.
Detailed explanation-2: -Persistent Organic Pollutants (POPs) POPs are persistent in the environment because they resist degradation. Many are lipophilic and, as such, accumulate in adipose tissue (Jackson et al., 2017). POPs include pesticides such as HCB and DDT, as well as industrial chemicals such as PCBs (Heindel et al., 2017).
Detailed explanation-3: -Persistent organic pollutants (POPs) are hazardous chemicals that threaten human health and the planet’s ecosystems. POPs remain intact for a long time, widely distributed throughout the environment, accumulate and magnify in living organisms through the food chain, and are toxic to both humans and wildlife.
Detailed explanation-4: -Human exposure-for some compounds and scenarios, even to low levels of POPs-can lead to many health effects including increased cancer risk, reproductive disorders, alteration of the immune system, neurobehavioural impairment, endocrine disruption, genotoxicity and increased birth defects.