HARD
Earn 100

Consider the following statements and select the option which includes all the correct ones:-

(a) Partial pressures of O2 and CO2 in Alveolar air are 104 mmHg and 40 mm Hg, respectively

(b) Partial pressures of O2 and CO2 in deoxygenated blood are 40 mmHg and 45 mm Hg, respectively

(c) Partial pressures of O2 and CO2 in oxygenated blood are 95 mmHg and 40 mm Hg, respectively

(d) Partial pressures of O2 and CO2 in Atmospheric air are 40 mmHg and 46 mm Hg, respectively

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Important Questions on Breathing and Respiration

EASY
The partial pressure of oxygen in the alveoli of the lungs is:
EASY
Right side shift of oxygen-haemoglobin dissociation curve occurs during
MEDIUM

Select the favourable conditions required for the formation of oxyhaemoglobin at the alveoli.

EASY
The element whose percentage weight is highest in both earth's crust and human body is
MEDIUM

In the given graph curves A, B and C represent the relation between partial pressure of oxygen pO2 and saturation of haemoglobin with oxygen. If curve A represents the condition of blood in a regular artery then please select the correct statement from below.

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MEDIUM

Study the following forms of transport of respiratory gases
A) CO2 as bicarbonates
B) O2 through plasma
C) CO2 as carbamino compounds
D) O2 through RBC
E) CO2 in a dissolved state
Arrange the above in sequence in ascending order based on their percentages.

EASY
Partial pressures of O2 and CO2 in systemic vein carrying deoxygenated blood are
EASY
Which of the following graphs best describes the oxygen dissociation curve where pO2 is the partial pressure of oxygen?
EASY
Study the following statements and pick up the correct one:
EASY

Match the following?

List I List II
i) PO2 of alveoli lungs a)  40 mmHg
ii) PO2 of atmosphenc air b)  95 mmHg
iii) PO2 of deoxygenated blood c)  104 mmHg
iv) PO2 of oxygenated blood d)  159 mmHg

 

MEDIUM
Human fetal hemoglobin differs from the adult hemoglobin in that it has:
HARD

Study the following oxygen-haemoglobin dissociation curve which explains the effect of pH on the saturation of haemoglobin with oxygen. Find out an option that gives the correct descending order of pH for x, y and z.

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EASY
Which of the following factors are favourable for the formation of oxyhaemoglobin in the alveoli human lungs?
MEDIUM
Approximately seventy percent of carbon-dioxide absorbed by the blood will be transported to the lungs:
EASY
Which ONE of the following chemicals serves as a substrate for carbonic anhydrase?
EASY
Which of the following factors favour the right side shift of the oxygen dissociation curve?
MEDIUM
Identify the wrong statement with reference to transport of oxygen.