The graph shows the oxygen-binding curves for myoglobin and hemoglobin. Label the graph and answer the questions. 1.0 0.5 0 myoglobin P50 = 10 hemoglobin P50 = 20 30 40 Which protein has a higher affinity for oxygen? 50 Answer Bank Hemoglobin curve Saturation Use the curves to determine the partial pressure of oxygen at 50% saturation for hemoglobin and myoglobin. Myoglobin curve O₂ pressure (torr) tor tor
The graph shows the oxygen-binding curves for myoglobin and hemoglobin. Label the graph and answer the questions. 1.0 0.5 0 myoglobin P50 = 10 hemoglobin P50 = 20 30 40 Which protein has a higher affinity for oxygen? 50 Answer Bank Hemoglobin curve Saturation Use the curves to determine the partial pressure of oxygen at 50% saturation for hemoglobin and myoglobin. Myoglobin curve O₂ pressure (torr) tor tor
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:**Hemoglobin P50 Calculation**
Enter the value of hemoglobin \( P_{50} \) in torr:
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**Question:**
Which protein has a higher affinity for oxygen?
- Myoglobin
- Hemoglobin
- They are equal
(Choose the correct answer from the dropdown menu provided.)
![The graph illustrates the oxygen-binding curves for myoglobin and hemoglobin. It is accompanied by an "Answer Bank" containing terms that need to be labeled on the graph: Hemoglobin curve, Myoglobin curve, Saturation, and O₂ pressure (torr).
### Graph Description:
- **Axes:**
- The x-axis is labeled as "O₂ pressure (torr)" and ranges from 0 to 50.
- The y-axis represents "Saturation" and ranges from 0 to 1.0.
- **Curves:**
- The graph has two curves: one orange and one green.
- The orange curve reaches saturation rapidly and plateaus near saturation of 1.0, indicating high affinity. This should be labeled as the "Myoglobin curve."
- The green curve rises more gradually and reaches saturation at higher partial pressures, labeled as the "Hemoglobin curve."
### Questions for Analysis:
1. **Determine P₅₀ Values:**
- Use the graph to determine the partial pressure of oxygen (P₅₀) at which myoglobin and hemoglobin are 50% saturated.
- For myoglobin and hemoglobin, note the oxygen pressure corresponding to 0.5 saturation on their respective curves.
2. **Which Protein has a Higher Affinity for Oxygen?**
- Compare the P₅₀ values: the protein with the lower P₅₀ value has a higher oxygen affinity.
### Answer Fields:
- **Myoglobin P₅₀ =** [Enter value] torr
- **Hemoglobin P₅₀ =** [Enter value] torr
### Conclusion:
Evaluate which protein, myoglobin or hemoglobin, has a higher affinity for oxygen based on their respective P₅₀ values.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa1e502f2-e187-4967-837b-da913ce1db1a%2F442e3be4-7510-41e7-ac69-e9b1aad64a72%2Fsd53hq8_processed.png&w=3840&q=75)
Transcribed Image Text:The graph illustrates the oxygen-binding curves for myoglobin and hemoglobin. It is accompanied by an "Answer Bank" containing terms that need to be labeled on the graph: Hemoglobin curve, Myoglobin curve, Saturation, and O₂ pressure (torr).
### Graph Description:
- **Axes:**
- The x-axis is labeled as "O₂ pressure (torr)" and ranges from 0 to 50.
- The y-axis represents "Saturation" and ranges from 0 to 1.0.
- **Curves:**
- The graph has two curves: one orange and one green.
- The orange curve reaches saturation rapidly and plateaus near saturation of 1.0, indicating high affinity. This should be labeled as the "Myoglobin curve."
- The green curve rises more gradually and reaches saturation at higher partial pressures, labeled as the "Hemoglobin curve."
### Questions for Analysis:
1. **Determine P₅₀ Values:**
- Use the graph to determine the partial pressure of oxygen (P₅₀) at which myoglobin and hemoglobin are 50% saturated.
- For myoglobin and hemoglobin, note the oxygen pressure corresponding to 0.5 saturation on their respective curves.
2. **Which Protein has a Higher Affinity for Oxygen?**
- Compare the P₅₀ values: the protein with the lower P₅₀ value has a higher oxygen affinity.
### Answer Fields:
- **Myoglobin P₅₀ =** [Enter value] torr
- **Hemoglobin P₅₀ =** [Enter value] torr
### Conclusion:
Evaluate which protein, myoglobin or hemoglobin, has a higher affinity for oxygen based on their respective P₅₀ values.
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