286087
Which of the following lung volumes or capacities can be measured by spirometer:
1 Functional residual capacity (FRC)
2 Residual volume
3 Total lung capacity (TLC)
4 Vital capacity
Explanation:
(d) Vital capacity can be measured by spirometer.
NCERT ( Page-271 & 272 / N-186
BREATHING and EXCHANGE OF GASES(NCERT)
286088
The exchange of gases in the alveoli of the lungs takes place by:
1 Simple diffusion
2 Osmosis
3 Active transport
4 Passive transport
Explanation:
(a) Gaseous exchange between blood (dissolved phase) and alveolar air (gaseous phase) across respiratory membrane occurs by simple diffusion. Obviously, it depends upon the concentration gradient (= partial pressure) of the concerned gases in blood and alveolar air.
NCERT Page-272 / N-187
BREATHING and EXCHANGE OF GASES(NCERT)
286090
Which of the following normally contains the highest concentration of oxygen ?
1 body cells
2 inhaled air
3 air in the pulmonary trunk
4 blood entering the lungs
Explanation:
(b) Inhaled air has not yet exchanged gases with lung capillaries, therefore it contains the highest concentration of oxygen.
NCERT Page-272 / N-187
BREATHING and EXCHANGE OF GASES(NCERT)
286091
Which of the following statement is incorrect?
1 Diffusion membrane is made up of 3-major layers.
2 Solubility of$\text{C}{{\text{O}}_{2}}$ is higher than ${{\text{O}}_{2}}$ by 25 times.
3 Breathing volumes are estimated by spirometer.
4 High conc. of hydrogen ions favours oxyhaemoglobin formation.
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BREATHING and EXCHANGE OF GASES(NCERT)
286087
Which of the following lung volumes or capacities can be measured by spirometer:
1 Functional residual capacity (FRC)
2 Residual volume
3 Total lung capacity (TLC)
4 Vital capacity
Explanation:
(d) Vital capacity can be measured by spirometer.
NCERT ( Page-271 & 272 / N-186
BREATHING and EXCHANGE OF GASES(NCERT)
286088
The exchange of gases in the alveoli of the lungs takes place by:
1 Simple diffusion
2 Osmosis
3 Active transport
4 Passive transport
Explanation:
(a) Gaseous exchange between blood (dissolved phase) and alveolar air (gaseous phase) across respiratory membrane occurs by simple diffusion. Obviously, it depends upon the concentration gradient (= partial pressure) of the concerned gases in blood and alveolar air.
NCERT Page-272 / N-187
BREATHING and EXCHANGE OF GASES(NCERT)
286090
Which of the following normally contains the highest concentration of oxygen ?
1 body cells
2 inhaled air
3 air in the pulmonary trunk
4 blood entering the lungs
Explanation:
(b) Inhaled air has not yet exchanged gases with lung capillaries, therefore it contains the highest concentration of oxygen.
NCERT Page-272 / N-187
BREATHING and EXCHANGE OF GASES(NCERT)
286091
Which of the following statement is incorrect?
1 Diffusion membrane is made up of 3-major layers.
2 Solubility of$\text{C}{{\text{O}}_{2}}$ is higher than ${{\text{O}}_{2}}$ by 25 times.
3 Breathing volumes are estimated by spirometer.
4 High conc. of hydrogen ions favours oxyhaemoglobin formation.
286087
Which of the following lung volumes or capacities can be measured by spirometer:
1 Functional residual capacity (FRC)
2 Residual volume
3 Total lung capacity (TLC)
4 Vital capacity
Explanation:
(d) Vital capacity can be measured by spirometer.
NCERT ( Page-271 & 272 / N-186
BREATHING and EXCHANGE OF GASES(NCERT)
286088
The exchange of gases in the alveoli of the lungs takes place by:
1 Simple diffusion
2 Osmosis
3 Active transport
4 Passive transport
Explanation:
(a) Gaseous exchange between blood (dissolved phase) and alveolar air (gaseous phase) across respiratory membrane occurs by simple diffusion. Obviously, it depends upon the concentration gradient (= partial pressure) of the concerned gases in blood and alveolar air.
NCERT Page-272 / N-187
BREATHING and EXCHANGE OF GASES(NCERT)
286090
Which of the following normally contains the highest concentration of oxygen ?
1 body cells
2 inhaled air
3 air in the pulmonary trunk
4 blood entering the lungs
Explanation:
(b) Inhaled air has not yet exchanged gases with lung capillaries, therefore it contains the highest concentration of oxygen.
NCERT Page-272 / N-187
BREATHING and EXCHANGE OF GASES(NCERT)
286091
Which of the following statement is incorrect?
1 Diffusion membrane is made up of 3-major layers.
2 Solubility of$\text{C}{{\text{O}}_{2}}$ is higher than ${{\text{O}}_{2}}$ by 25 times.
3 Breathing volumes are estimated by spirometer.
4 High conc. of hydrogen ions favours oxyhaemoglobin formation.
286087
Which of the following lung volumes or capacities can be measured by spirometer:
1 Functional residual capacity (FRC)
2 Residual volume
3 Total lung capacity (TLC)
4 Vital capacity
Explanation:
(d) Vital capacity can be measured by spirometer.
NCERT ( Page-271 & 272 / N-186
BREATHING and EXCHANGE OF GASES(NCERT)
286088
The exchange of gases in the alveoli of the lungs takes place by:
1 Simple diffusion
2 Osmosis
3 Active transport
4 Passive transport
Explanation:
(a) Gaseous exchange between blood (dissolved phase) and alveolar air (gaseous phase) across respiratory membrane occurs by simple diffusion. Obviously, it depends upon the concentration gradient (= partial pressure) of the concerned gases in blood and alveolar air.
NCERT Page-272 / N-187
BREATHING and EXCHANGE OF GASES(NCERT)
286090
Which of the following normally contains the highest concentration of oxygen ?
1 body cells
2 inhaled air
3 air in the pulmonary trunk
4 blood entering the lungs
Explanation:
(b) Inhaled air has not yet exchanged gases with lung capillaries, therefore it contains the highest concentration of oxygen.
NCERT Page-272 / N-187
BREATHING and EXCHANGE OF GASES(NCERT)
286091
Which of the following statement is incorrect?
1 Diffusion membrane is made up of 3-major layers.
2 Solubility of$\text{C}{{\text{O}}_{2}}$ is higher than ${{\text{O}}_{2}}$ by 25 times.
3 Breathing volumes are estimated by spirometer.
4 High conc. of hydrogen ions favours oxyhaemoglobin formation.