Oxygen Dissociation Curve

Q.

What is true about haemoglobin?

1. It contains a carbohydrate part called globin.

2. It contains six pyrrole rings attached to iron element at the centre.

3. It contains four pyrrole rings attached to iron element at the centre.

4. None of the above

Q. Explain Bohr effect?

Q. High pH lowers affinity of oxygen to haemoglobin.

1. True
2. False

Q.

The oxygen-haemoglobin dissociation curve will show a right shift in case of

1. High partial pressure of carbon dioxide

2. Decrease in temperature

3. Decrease in pH

4. All of these

Q. What does the sigmoid curve in the oxygen dissociation graph denote and what is the use of plotting it ?

Q. The oxygen dissociation curve shows the relationship between oxygen and oxyhaemoglobin.

1. False
2. True

Q. When temperature decreases the oxyhaemoglobin curve will become

1. More steep
2. Straight
3. Parabola
4. All of the above

Q. The y-axis of the oxygen-haemoglobin dissociation curve represents

1. the partial pressure of oxygen
2. the partial pressure of carbon dioxide
3. the number of haemoglobin molecules available for oxygen transport
4. the percentage of haemoglobin saturation

Q. Which of the following is true regarding Bohr effect?

1. $C{o}_2$ is disassociated more into the tissues
2. $p^H$ of the blood decreases
3. $O_2$ is released more into the tissues
4. Both A and C

Q. The relationship curve between blood ${\mathrm{pO}}_2$ and % Hb saturation is.

1. linear
2. Z shaped
3. S shaped
4. J shaped

Q. why lungs are situated in a air tight chamber?

Q. Oxygen dissociation curve is

1. Sigmoid
2. Parabolic
3. Hyperbolic
4. Straight line