Calcium and Cellular Function Quiz
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Questions and Answers

Which ion is essential to life but requires its concentration to be lowered ten-thousandfold for biochemical reactions to occur?

  • Magnesium (Mg2+)
  • Calcium (Ca2+) (correct)
  • Potassium (K+)
  • Sodium (Na+)
  • Which fluid bathes the cells and contains ionized sodium, potassium, magnesium, chloride, phosphate, bicarbonate, glucose, and small amounts of protein?

  • Extracellular fluid (ECF) (correct)
  • Cytosol
  • Plasma membrane
  • Intracellular fluid (ICF)
  • Which fluid is characterized by low calcium, sodium, and chloride concentrations compared to the extracellular fluid (ECF)?

  • Extracellular fluid (ECF)
  • Cytosol
  • Plasma membrane
  • Intracellular fluid (ICF) (correct)
  • Which ion has an increased concentration in the intracellular fluid (ICF) compared to the extracellular fluid (ECF)?

    <p>Potassium (K+)</p> Signup and view all the answers

    Which fluid has a slightly more acidic pH compared to the extracellular fluid (ECF)?

    <p>Intracellular fluid (ICF)</p> Signup and view all the answers

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