Haemoglobin vs Myoglobin

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

Both haemoglobin and myoglobin consist of four polypeptide chains.

Haemoglobin loses oxygen at a PO2 of 20 mmHg.

Myoglobin is responsible for transporting oxygen throughout the body.

Haemoglobin has more affinity with oxygen than myoglobin. (correct)

Where is myoglobin primarily found?

Liver cells

Lung tissues

Skeletal muscle cells (correct)

Red blood cells (RBCs)

What is the main function of haemoglobin?

Storing oxygen in muscle tissues

Binding oxygen in red blood cells (RBCs)

Releasing oxygen at a PO2 of 20 mmHg

Transporting oxygen throughout the body (correct)

True or false: Haemoglobin consists of one polypeptide chain.

False Signup and view all the answers

True or false: Myoglobin can bind to four oxygen molecules.

False Signup and view all the answers

True or false: Myoglobin has less affinity with oxygen than haemoglobin.

False Signup and view all the answers

Haemoglobin consists of ______ polypeptide chains

four Signup and view all the answers

Each molecule of haemoglobin has ______ iron-containing haem groups

four Signup and view all the answers

Four ______ molecules can bind to each molecule of haemoglobin

oxygen Signup and view all the answers

Compare the number of polypeptide chains in haemoglobin and myoglobin. How does this difference contribute to their distinct functions in the body?

Haemoglobin consists of four polypeptide chains, while myoglobin consists of one polypeptide chain. This difference allows haemoglobin to transport oxygen throughout the body, while myoglobin stores oxygen within muscle tissues. Signup and view all the answers

Explain the difference in oxygen affinity between haemoglobin and myoglobin. How does this difference affect their ability to bind and release oxygen?

Haemoglobin has less affinity with oxygen, meaning it releases oxygen more readily. It loses oxygen at a partial pressure of oxygen (PO2) of 60 mmHg. On the other hand, myoglobin has more affinity with oxygen, meaning it holds onto oxygen more tightly. It loses oxygen at a PO2 of 20 mmHg. Signup and view all the answers

What are the main functions of haemoglobin and myoglobin in the body? How do these functions differ?

Haemoglobin is responsible for transporting oxygen throughout the body, while myoglobin primarily stores oxygen within muscle tissues. The differences in oxygen affinity and oxygen release between haemoglobin and myoglobin contribute to their distinct functions. Signup and view all the answers

Match the following statements about haemoglobin and myoglobin with their correct oxygen affinity:

Haemoglobin = Less affinity, releases oxygen at a PO2 of 60 mmHg Myoglobin = More affinity, holds onto oxygen more tightly and loses it at a PO2 of 20 mmHg Signup and view all the answers

Match the following molecules with their correct oxygen binding capacity:

Haemoglobin = Can bind four oxygen molecules Myoglobin = Can bind only one oxygen molecule Signup and view all the answers

Match the following proteins with their correct primary function:

Haemoglobin = Responsible for oxygen transport throughout the body Myoglobin = Primarily involved in oxygen storage within muscle tissues Signup and view all the answers

Haemoglobin vs Myoglobin

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Questions and Answers

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

Where is myoglobin primarily found?

What is the main function of haemoglobin?

True or false: Haemoglobin consists of one polypeptide chain.

True or false: Myoglobin can bind to four oxygen molecules.

True or false: Myoglobin has less affinity with oxygen than haemoglobin.

Haemoglobin consists of ______ polypeptide chains

Each molecule of haemoglobin has ______ iron-containing haem groups

Four ______ molecules can bind to each molecule of haemoglobin

Compare the number of polypeptide chains in haemoglobin and myoglobin. How does this difference contribute to their distinct functions in the body?

Explain the difference in oxygen affinity between haemoglobin and myoglobin. How does this difference affect their ability to bind and release oxygen?

What are the main functions of haemoglobin and myoglobin in the body? How do these functions differ?

Match the following statements about haemoglobin and myoglobin with their correct oxygen affinity:

Match the following molecules with their correct oxygen binding capacity:

Match the following proteins with their correct primary function:

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