29 Questions
Which organ is mainly affected by inorganic mercury toxicity?
Kidneys
What is a common symptom of acrodynia (Pink disease) resulting from dermal exposure to mercury?
Peripheral Neuropathy
Which of the following is NOT a sign of long-term organic mercury toxicity?
Gingivitis
What is a potential effect of organic mercury toxicity on infants with severely affected mothers?
Visual impairment
Which symptom is associated with central nervous system effects of mercury exposure?
Insomnia
How is inorganic mercury typically measured in diagnostic procedures?
In 24-hour urine collection
Which of the following sweeteners has the highest relative sweetness compared to sucrose?
Sucralose
What is the chemical formula for aspartame?
C₁₄H₁₈N₂O₅
Which of the following is NOT a product that typically contains aspartame?
Fruit juices
In which year was saccharin discovered, and by whom?
1879, by Constantine Fahlberg
Which of the following statements about aspartame is true, according to the information provided?
Aspartame was discovered in 1965 while searching for new treatments for gastric ulcers.
What was the more accurate name proposed for the structure of sucralose?
Trichlorogalactosucrose
Why did the FDA not require the use of the more accurate name 'trichlorogalactosucrose' for sucralose?
The FDA did not believe it was necessary to use the more accurate name
What is the most dangerous component of sucralose according to the text?
The presence of chlorine
Why are the long-term effects of sucralose on humans unclear according to the text?
Lack of long-term studies on humans
Which of the following symptoms have been associated with sucralose consumption?
Gastrointestinal problems and skin irritations
What did a recent study find about the effects of Splenda (sucralose) on rats?
Splenda interfered with the absorption of medications in the rats
What is the legally defined term for a pesticide with an LD50 of 50 mg/kg or less?
Highly toxic pesticide
What is the signal word that must be displayed on the label of a pesticide with an LD50 of 50 mg/kg or less?
Danger
What is the relative toxicity (LD50 in mg/kg) of the insecticide Parathion?
13.0
What is the specific gravity of mercury, a heavy metal?
13.54
How are heavy metals typically absorbed through the respiratory system?
All of the above
Which of the following is NOT a physical property of heavy metals?
Low density
What percentage of non-industry-sponsored studies identified problems with aspartame?
92%
What was the position held by some FDA officials after approving aspartame?
They worked for the aspartame industry
How many of the industry-sponsored studies on aspartame claimed to find no problems with the sweetener?
All 74 studies
What is the acceptable daily intake (ADI) of acesulfame potassium set by the FDA?
15 mg/kg of body weight/day
What is the primary concern raised about acesulfame potassium in the text?
The lack of long-term studies and improper testing
How does the aspartame industry's research compare to that of the tobacco industry?
It is similar, as industry research rarely finds problems with their products
Test your knowledge on the toxicity classification of pesticides based on LD50 values. Learn about the specific labeling requirements for pesticides with high toxicity levels, including the signal word 'DANGER' and the 'POISON' label. Explore the relative toxicity levels of various insecticides and understand the criteria for heavy metal classification.
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