1401BiologyMedium
Which one of the following toxic metals is extensively present in newspaper?
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Correct answer
B. Pb
Explanation
Newspaper contains a toxic material called lead. It is a naturally occurring toxic metal found in the Earth’s crust. Lead can harm production of blood cells and the absorption of calcium needed for strong bones and teeth, muscle movements, and the work of nerves and blood vessels. Lead is a chemical element with the symbol Pb and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, lead is silvery with a hint of blue; it tarnishes to a dull gray color when exposed to air.
Correct answer
B. Cerebellum
Explanation
Cerebellum is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. micro tubules
Explanation
micro tubules is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. 7.4
Explanation
7.4 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Culicidae
Explanation
Culicidae is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Water
Explanation
Water is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Choanoytes
Explanation
Choanoytes is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Acrocentric
Explanation
Acrocentric is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Half Liter
Explanation
Half Liter is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Stroma
Explanation
Stroma is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.