Iron-Containing Haem Groups

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Questions and Answers

Which of the following statements is true about haemoglobin and myoglobin?

  • Haemoglobin and myoglobin both have four iron-containing haem groups.
  • Haemoglobin has one iron-containing haem group, while myoglobin has four iron-containing haem groups.
  • Haemoglobin has four iron-containing haem groups, while myoglobin has one iron-containing haem group. (correct)
  • Haemoglobin and myoglobin both have one iron-containing haem group.

Which molecule has a higher number of iron-containing haem groups?

  • Haemoglobin (correct)
  • Myoglobin
  • Both have the same number of iron-containing haem groups
  • None of the above

Which molecule is more likely to bind and transport oxygen in the body?

  • Haemoglobin (correct)
  • Myoglobin
  • Both molecules have equal affinity for oxygen
  • None of the above

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