Podcast
Play an AI-generated podcast conversation about this lesson
Questions and Answers
Which of the following statements about haemoglobin and myoglobin is correct?
Which of the following statements about haemoglobin and myoglobin is correct?
- Each molecule of haemoglobin has one iron-containing haem group, while myoglobin has four iron-containing haem groups.
- Haemoglobin is found in muscles, while myoglobin is found in red blood cells (RBCs).
- Haemoglobin can bind to one oxygen molecule, whereas myoglobin can bind to four oxygen molecules. (correct)
- Haemoglobin consists of one polypeptide chain, while myoglobin consists of four polypeptide chains.
What is the main function of haemoglobin?
What is the main function of haemoglobin?
- Releasing oxygen more readily than myoglobin
- Storing oxygen in muscle tissues
- Binding to oxygen more tightly than myoglobin
- Transporting oxygen throughout the body (correct)
At what partial pressure of oxygen (PO2) does myoglobin lose oxygen?
At what partial pressure of oxygen (PO2) does myoglobin lose oxygen?
- 20 mmHg (correct)
- 40 mmHg
- 60 mmHg
- 80 mmHg
