All the following facilitate binding of oxygen to hemoglobin at alveoli except:

1.  Low pO2

2.  Low pCO2

3.  Lesser H+ concentration

4.  Lower temperature

Subtopic:  Respiratory System: Transport of Gases Part 1 | Respiratory System: Transport of Gases Part 2 | Respiratory System: Transport of Gases |
 90%
From NCERT
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An increase from pH 7.2 to pH 7.4 around hemoglobin causes

1. hemoglobin to release all bound oxygen molecules.

2. an increase in the affinity of hemoglobin to bind oxygen molecules.

3. hemoglobin to denature.

4. an increase in the binding of H+ by hemoglobin.

Subtopic:  Respiratory System: Transport of Gases Part 1 | Respiratory System: Transport of Gases |
 74%
From NCERT
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In which of the following disease alveolar walls are damaged due to which respiratory surface is decreased

(1)Asthma

(2)Emphysema

(3)Bronchitis

(4)Rhinitis

Subtopic:  Respiratory Disorders: Part 1 | Respiratory Disorders: Part 2 |
 91%
From NCERT
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Which of the following disease is caused mainly due to cigarette smoking

(1)Asthma

(2)Emphysema

(3)Bronchitis

(4)Rhinitis

Subtopic:  Respiratory Disorders: Part 2 |
 97%
From NCERT
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Difficulty in breathing due to inflammation  of bronchi and bronchioles leads to

(1)Asthma

(2)Emphysema

(3)Occupational Lung Disease

(4)Rhinitis

Subtopic:  Respiratory Disorders: Part 1 |
 88%
From NCERT
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Respiratory rhythm Centre is present in the

(1)forebrain

(2)midbrain

(3)Hindbrain

(4)Diencephalon

Subtopic:  Respiratory System: Regulation of Respiration |
 80%
From NCERT
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Pneumotaxic Centre is present in the

(1)forebrain

(2)midbrain

(3)Hindbrain

(4)Diencephalon

Subtopic:  Respiratory System: Regulation of Respiration |
 80%
From NCERT
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Aortic arch and carotid artery receptors cannot recognise changes in

(1)CO Concentration

(2)O2­ Concentration

(3)H+ ions Concentration

(4)All of these

Subtopic:  Respiratory System: Regulation of Respiration |
 84%
From NCERT
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The respiratory centre is highly insensitive for

(1)CO

(2)O

(3)H+ ions

(4)Both A and C

Subtopic:  Respiratory System: Regulation of Respiration |
 71%
From NCERT
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The respiratory centre is highly sensitive for

(1)CO

(2)O

(3)H+ ions

(4)Both A and C

Subtopic:  Respiratory System: Regulation of Respiration |
 90%
From NCERT
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