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How many factors shift the oxygen dissoc...

How many factors shift the oxygen dissociation curve to the right shift?
I Low partial pressure of oxygen
ii High concentation of carbon dioxide
iii High number of hydrogrn ions
iv Low body temperature
v Daily exercise
vi Haemoglobin of babies or fetal haemoglobin

A

6

B

5

C

4

D

3

Text Solution

AI Generated Solution

The correct Answer is:
To determine how many factors shift the oxygen dissociation curve to the right, we need to analyze each of the given factors: 1. **Low partial pressure of oxygen**: This factor does shift the curve to the right. When the partial pressure of oxygen is low, hemoglobin releases oxygen more readily to the tissues. 2. **High concentration of carbon dioxide**: This factor also shifts the curve to the right. Increased carbon dioxide levels lead to a decrease in pH (more acidic), which promotes the release of oxygen from hemoglobin. 3. **High number of hydrogen ions**: This is related to the previous factor. An increase in hydrogen ions (lower pH) shifts the curve to the right, indicating that hemoglobin will release oxygen more easily. 4. **Low body temperature**: This factor does not shift the curve to the right. In fact, lower temperatures tend to stabilize hemoglobin and promote oxygen binding, shifting the curve to the left. 5. **Daily exercise**: Exercise increases the demand for oxygen and typically leads to higher carbon dioxide levels and increased temperature in the body, which can shift the curve to the right. 6. **Hemoglobin of babies or fetal hemoglobin**: Fetal hemoglobin has a higher affinity for oxygen compared to adult hemoglobin, which means it does not shift the curve to the right. Instead, it shifts it to the left. Now, let's summarize the factors that shift the oxygen dissociation curve to the right: - Low partial pressure of oxygen (Yes) - High concentration of carbon dioxide (Yes) - High number of hydrogen ions (Yes) - Low body temperature (No) - Daily exercise (Yes) - Hemoglobin of babies or fetal hemoglobin (No) Thus, the factors that shift the curve to the right are: 1. Low partial pressure of oxygen 2. High concentration of carbon dioxide 3. High number of hydrogen ions 4. Daily exercise **Total factors that shift the curve to the right: 4** **Final Answer: 4 factors (Option C)**
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