In alveoli,

1. pCO2 is high and pO2is low

2. pCO2 is low and pO2 is high

3. pCO2 is low and pO2 low

4. None of the above

Subtopic:  Respiratory System: Exchange of Gases |
 91%
From NCERT
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The formation of Carbonic acid from Carbon dioxide and water has catalyzed the enzyme

1. Carbonic anhydrase

2. Carbonic anhydride

3. Carbonic hydrase

4. Both A and C

Subtopic:  Respiratory System: Transport of Gases |
 89%
From NCERT
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At tissue sites, partial pressure of CO is high due to _______ process.

1. Anabolic

2. catabolic

3. Both A and B

4. Oxidative

Subtopic:  Respiratory System: Exchange of Gases |
 76%
From NCERT
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Carbonic anhydrase is present in

1. R.B.C

2. Plasma

3. Both A and B

4. Tissues

Subtopic:  Respiratory System: Transport of Gases |
 70%
From NCERT
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The chloride ions diffuse into the erythrocytes to maintain the electrochemical neutrality, this phenomenon is called

1. Hamburger Phenomenon

2. Chloride Shift

3. Haldane effect

4. Both A and B

Subtopic:  Respiratory System: Transport of Gases Part 2 | Respiratory System: Transport of Gases |
 59%
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Which of the following helps in the regulation of the respiratory rhythm?

1. Respiratory rhythm centre

2. Pneumotaxic centre

3. Aortic arch and carotid artery receptors

4. All of the above

Subtopic:  Respiratory System: Regulation of Respiration |
 79%
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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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 |
 78%
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 |
 71%
From NCERT
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Which of the following is not true about hering breuer reflex

1. It is activated when a normal mechanism to switch off inspiration does not work timely due to any reason.

2. It is activated when a normal mechanism to switch off expiration does not work timely due to any reason

3. It prevents the alveoli from overstretching and bursting

4. It normally remains inactive

Subtopic:  Respiratory System: Transport of Gases Part 1 | Respiratory System: Transport of Gases Part 2 | Respiratory System: Transport of Gases |
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