Other questions in this quiz

2. Which of these elements are essential elements?

  • Cu, I, Fe
  • Se, Cr, Mn
  • Molybdenum, Iodinine, Lithum

3. Which of these non metals is showing the wrong info?

  • sulphur forms hydroxyl radical which causes cough/tears. caused industrial pollution
  • Sulphur forms H2S blocks enzymes containing heavy metal ion,
  • Carbon which forms CO,HCN, KCN inhibits the ctochrome oxidase by binding to FE2+
  • Nitrogen forms NO2- forms nitrosamines, causes oxidation of iron in heamoglobin, carcinoginc. Formation inhited by vit C and E

4. Which of these metal toxication statement is correct?

  • Ba- can lead to hear failure. BaSO4 used in xrays
  • Cu accumalates in brain, liver, kidney. Cirrohosis, loss of coordination, mental disorders.
  • Mercury is an Irreversible inhibtor cathelochomines. Enzymes dependant on selenium
  • Be blocks enzymes that utilise Mg2+ and can damage skin/lungs
  • Cadmium has (cumulative phenomenon) and accumalates in kidney and liver irreversible replacing Zn
  • Mercury can be treated through Dialysis
  • Cu causes inherited defect in ceruloplasmin synthesis. Results in poor Fe2+ absorption(radicals can then form fenton)

5. Which of these is the elimination of the products from the body?

  • Sweat, air
  • Urine, Bile
  • Occupational
  • Diet, air


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