Question 65 Why is it difficult to be sure whether humans are experiencing endoc
ID: 87953 • Letter: Q
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Question 65
Why is it difficult to be sure whether humans are experiencing endocrine disrupting effects from the chemicals in our environment, and how is the situation for fish living if waters affected by discharged treated sewage different in that regard? What is a primary piece of evidence supporting the idea that humans have been affected by endocrine active compounds in the environment? What is "BPA" and have been its two primary uses in consumer products? What primary chemical purpose have phthalates been used for, and give a chemical material in your life in which you are likely to encounter some phthalates. What does "intersex" mean for fish?Explanation / Answer
67. BPA is Bisphenol A which is an active ingredient used to make hard, durable, polycarbon plastics. It can slowly seep into the food materials which are packed or stored in it.
68. Phthalates are derived from petroleum and used to soften and increase the flexibility of plastics and polyvinyl chloride (PVC).BPA and Pthalates both form the best endocrine disruptors in man. Pthalates are mainly used in cosmetics followed by automobiles (interiors, seat covers), building construction, wires and toys.
69. The occurrence of female egg cells in the male testis in fish leads to intersex. In some cases, notable levels of vitellogenin is also been noted the blood of intersex fish. This is due to hormonal imbalance caused due to the effect of endocrine disruptors.
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