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Questions and Answers
What is the primary function of myoglobin?
What is the primary function of myoglobin?
- Act as an enzyme
- Transport CO2 from tissues to lungs
- Transport oxygen from the lung to the tissues
- Muscle stores oxygen (correct)
Which type of proteins have a compact, globular structure and are water soluble?
Which type of proteins have a compact, globular structure and are water soluble?
- Fibrous proteins
- Globular proteins (correct)
- Collagen
- Myosin
What is the primary function of hemoglobin?
What is the primary function of hemoglobin?
- Transport oxygen from the lung to the tissues (correct)
- Muscle stores oxygen
- Transport CO2 from tissues to lungs
- Act as a motor protein
What is the role of the heme group in myoglobin and hemoglobin?
What is the role of the heme group in myoglobin and hemoglobin?
What is the main function of hemoglobin?
What is the main function of hemoglobin?
What is the quaternary structure of hemoglobin?
What is the quaternary structure of hemoglobin?
What triggers the change in conformation of hemoglobin from T state to R state?
What triggers the change in conformation of hemoglobin from T state to R state?
What effect do protons and CO2 have on hemoglobin's affinity for oxygen?
What effect do protons and CO2 have on hemoglobin's affinity for oxygen?
What is the primary function of collagen?
What is the primary function of collagen?
What is the secondary structure of collagen helix?
What is the secondary structure of collagen helix?
What disease is caused by a genetic disorder resulting in fragile bones that break easily?
What disease is caused by a genetic disorder resulting in fragile bones that break easily?
What is required for the formation of hydroxyproline in collagen?
What is required for the formation of hydroxyproline in collagen?
What are the subunits present in myosin?
What are the subunits present in myosin?
What type of filament does actin polymerize to form?
What type of filament does actin polymerize to form?
Which type of proteins have a compact, globular structure and are water soluble?
Which type of proteins have a compact, globular structure and are water soluble?
What is the primary function of myoglobin?
What is the primary function of myoglobin?
What is the quaternary structure of hemoglobin?
What is the quaternary structure of hemoglobin?
What is the role of the heme group in myoglobin and hemoglobin?
What is the role of the heme group in myoglobin and hemoglobin?
What triggers the change in conformation of hemoglobin from T state to R state?
What triggers the change in conformation of hemoglobin from T state to R state?
What is the main function of hemoglobin?
What is the main function of hemoglobin?
What is the quaternary structure of hemoglobin?
What is the quaternary structure of hemoglobin?
What is the main function of collagen?
What is the main function of collagen?
What triggers the change in conformation of hemoglobin from T state to R state?
What triggers the change in conformation of hemoglobin from T state to R state?
What is required to form hydroxyproline in collagen?
What is required to form hydroxyproline in collagen?
What is the secondary structure of collagen helix?
What is the secondary structure of collagen helix?
What effect do protons and $CO_2$ have on hemoglobin's affinity for oxygen?
What effect do protons and $CO_2$ have on hemoglobin's affinity for oxygen?
What disease is caused by a genetic disorder resulting in fragile bones that break easily?
What disease is caused by a genetic disorder resulting in fragile bones that break easily?
What are the subunits present in myosin?
What are the subunits present in myosin?
What type of filament does actin polymerize to form?
What type of filament does actin polymerize to form?
What is the primary function of myoglobin?
What is the primary function of myoglobin?
Which one of these describes the quaternary structure of hemoglobin?
Which one of these describes the quaternary structure of hemoglobin?
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Study Notes
Protein Structure and Function
- Globular proteins have a compact, globular structure and are water soluble.
- Myoglobin and hemoglobin are examples of globular proteins.
Myoglobin
- The primary function of myoglobin is to store oxygen in muscles.
- The heme group in myoglobin plays a crucial role in binding oxygen.
Hemoglobin
- The primary function of hemoglobin is to transport oxygen from lungs to tissues.
- The quaternary structure of hemoglobin is a tetramer, consisting of two alpha and two beta subunits.
- The heme group in hemoglobin plays a crucial role in binding oxygen.
- The change in conformation of hemoglobin from T state to R state is triggered by the binding of oxygen.
- The main function of hemoglobin is to transport oxygen from lungs to tissues.
- Protons and CO2 decrease hemoglobin's affinity for oxygen.
Collagen
- The primary function of collagen is to provide structure and strength to connective tissue.
- The secondary structure of collagen helix is a triple helix.
- Hydroxyproline is required for the formation of collagen, and vitamin C is necessary for its formation.
- Osteogenesis imperfecta is a disease caused by a genetic disorder resulting in fragile bones that break easily.
Muscle Proteins
- Myosin has two subunits: heavy chain and light chain.
- Actin polymerizes to form microfilaments.
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