Chemistry 2: Lesson 2 Submission Quiz
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Questions and Answers

Which of the following is a toxic trace element when present in excess concentration?

  • Copper (correct)
  • Chromium
  • Zinc
  • Iron
  • Where is iron absorbed in the body?

  • Colon
  • Stomach
  • Ileum
  • Duodenum and jejunum (correct)
  • Which of the following is a biologic function of selenium?

  • Immune system (correct)
  • Respiration
  • Tissue repair
  • Hormonal activities
  • What is the main constituent of hemoglobin and myoglobin?

    <p>Iron</p> Signup and view all the answers

    What happens with an accumulation of free iron in the plasma?

    <p>Increased RBC destruction</p> Signup and view all the answers

    Which trace element is essential for protection from free radicals?

    <p>Selenium</p> Signup and view all the answers

    Which laboratory test measures the amount of iron that could be found by saturating the binding proteins present in the sample?

    <p>Total Iron Binding Capacity (TIBC)</p> Signup and view all the answers

    What is the normal range for serum iron levels in males?

    <p>65-170 ug/dL</p> Signup and view all the answers

    Which condition is associated with decreased serum iron, increased transferrin, decreased percent saturation, and decreased ferritin?

    <p>Malnutrition</p> Signup and view all the answers

    What is the role of zinc in the human body?

    <p>Promotes healthy immune system</p> Signup and view all the answers

    Which nutrient promotes ovulation, sperm development, DNA synthesis, and growth development?

    <p>Zinc</p> Signup and view all the answers

    What is the function of copper in the human body?

    <p>Antioxidant defense</p> Signup and view all the answers

    Which condition is associated with delayed sexual maturation, prolonged wound healing, and impaired wound healing?

    <p>Zinc excess</p> Signup and view all the answers

    What does Total Iron Binding Capacity (TIBC) differentiate between?

    <p>Iron poisoning and anemia of chronic disease</p> Signup and view all the answers

    What does serum ferritin measure?

    <p>Index of iron stores</p> Signup and view all the answers

    Which metalloenzyme is critical for the reduction of iron in heme synthesis?

    <p>Ceruloplasmin</p> Signup and view all the answers

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