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- Subject
- Biology Mcqsbiology-mcqs
- Published
- 7 Jan 2021
- Last updated
- 28 May 2026
Explanation
Newspapers often contain lead, a toxic metal naturally present in the Earth's crust. Lead exposure can interfere with blood cell production and disrupt calcium absorption, which is essential for healthy bones, teeth, muscle function, and the nervous system. Represented by the symbol Pb and atomic number 82, lead is a heavy, soft, and malleable metal that tarnishes from a shiny silver-blue to a dull gray upon air exposure.
More Biology Mcqs
Practice related questions from the same subject.
- 1.Which field of study focuses on the cultivation of crops and the management of soil?
- 2.What does pedology focus on studying?
- 3.What is another name for mitochondria?
- 4.Which field focuses on examining the interactions between antigens and antibodies present in the blood?
- 5.Which scientific discipline focuses on organizing and categorizing living organisms?
- 6.In the scientific name Homo sapiens, which two taxonomic categories are represented by the Latin terms?
- 7.Which virus is responsible for causing rabies?
- 8.Which of the following conditions is commonly associated with multiple opportunistic infections?