Oxygen haemoglobin dissociation curve will shift to right on decrease ofa)Acidityb)Carbon dioxide concentrationc)Both 1 & 2d)pHCorrect answer is option 'D'. Can you explain this answer?

Question

Oxygen haemoglobin dissociation curve will shift to right on decrease ofa)Acidityb)Carbon dioxide concentrationc)Both 1 &#38; 2d)pHCorrect answer is option 'D'. Can you explain this answer?

Answer

Oxygen haemoglobin dissociation curve is a sigmoid shape curve under normal condition.But its can be shifted to right or left on changing the conditions like 1)pH2)CO2 concentration3)temp 4)H+ ion concentration
1)pH and H+ conc have inverse relationOn increase in H+ ion conc pH decrease and vice versa So on increase in pH(alkaline)curve shift towards left and so we can say that on decrease H+ conc curve shift towards left and on increasing H+ conc and decrease in pH(acidity)curve shift towards right
2)Increase in Co2 concentration and temp shift curve towards right and vice versa
So in this question it is asked on DECREASE of which of following will shift curve toward rightSo Decrease in Co2 and acidity i.e. H+ conc will shift curve towards left and decrease in pH will shift curve toward right

Answer

It will shift to right only when their is increase in H+ concentration(acidity increases) and increase in CO2 concentration the decrease in pH(alkalinity) or decrease in H+ Concentration will shift to right side

Answer

Explanation:

The oxygen-hemoglobin dissociation curve represents the relationship between the partial pressure of oxygen (PO2) and the percentage of hemoglobin saturated with oxygen. It is an S-shaped curve that demonstrates how readily hemoglobin binds and releases oxygen in response to changes in partial pressure.

The position of the oxygen-hemoglobin dissociation curve can shift to the right or left depending on certain factors. A shift to the right indicates a decreased affinity of hemoglobin for oxygen, while a shift to the left indicates an increased affinity.

Factors affecting the position of the oxygen-hemoglobin dissociation curve:

1. pH (Acidity):
- When the pH decreases (increased acidity), the oxygen-hemoglobin dissociation curve shifts to the right.
- This is known as the Bohr effect, and it facilitates the unloading of oxygen in tissues with high metabolic activity.
- The decrease in pH causes an increase in hydrogen ions, which binds to hemoglobin, leading to a conformational change in the protein.
- This conformational change reduces the affinity of hemoglobin for oxygen, allowing for easier oxygen release in the tissues.

2. Carbon Dioxide Concentration:
- Increased carbon dioxide concentration in the blood causes the oxygen-hemoglobin dissociation curve to shift to the right.
- This is known as the Haldane effect.
- Carbon dioxide reacts with water to form carbonic acid, which dissociates into bicarbonate ions and hydrogen ions.
- The increase in hydrogen ions leads to a decrease in pH, which, as mentioned earlier, causes a rightward shift in the curve.

Conclusion:
Both pH and carbon dioxide concentration affect the position of the oxygen-hemoglobin dissociation curve. However, in this specific question, the correct answer is option D, which states that the curve will shift to the right on a decrease in pH. While carbon dioxide concentration also affects the position of the curve, the given options do not include it.

Similar NEET Doubts

How many factors shift the oxygen dissociation curve to the right shift?1. Low partial pressure of oxygen.2. High concentration of carbon dioxide.3. High number of hydrogen ions.4. Low body temperature.5. Daily exercise.6. Haemoglobin of babies or fetal haemoglobin.

In carbon monoxide poisoning there is[A.F.M.C. 1997]

The oxygen heamoglbin curve shifting right side due to??? 1)Temp. 2) carbon dioxide 3)pH 4) acidity?

Which of the following is incorrect about the given graph?

In the tissues, high concentrations of carbon dioxide

Top Courses for NEETView all

Biology Class 11

Daily Test for NEET Preparation

NEET Mock Test Series 2025

Topic-wise MCQ Tests for NEET

Physics Class 11

Top Courses for NEET

Top Courses for NEET

Suggested Free Tests

Related Content

About NEET

NEET Preparation Material

How to Prepare for NEET Exam?

NCERT Based Study Material

NEET Mock Tests

Other Popular Exams

Company