MCQ ON TRANSPORT OF GASES class 11 for NEET | TRANSPORT OF GASES class 11| MCQ TRANSPORT OF GASES with Answer | Check the below NCERT MCQ question for class 11Biology based on the with Answers.
MCQ on TRANSPORT OF GASES class 11Biology with answers were prepared based on the latest pattern.We have provided class 11 Biology MCQs question with Answers to help students understand the concept very well.
MCQ ON TRANSPORT OF GASES is useful for NEET / CSIR / UGC / CBSE / ICSE / AIIMS / EXAM / AFMC EXAM / STATE LEVEL MEDICAL EXAM/ KVS PGT BIOLOGY / NVS PGT BIOLOGY EXAM 2023-2024 ,2025
INTRODUCTION:-
TRANSPORT OF GASES:-
Blood is the medium of transport for Oxygen and Carbon dioxide. About 97% of oxygen is transported by RBC in the blood. The remaining 3% of oxygen is carried in a dissolve state through the plasma. Nearly 20 to 25% of carbon dioxide is transported by RBCs where is 20% of it is carried as bicarbonate. About 7% of carbon dioxide is carried in a dissolve state through plasma.
TRANSPORT OF OXYGEN :-
Hemoglobin is red color iron containing pigment present in the RBCs. Oxygen can bind with hemoglobin in reversible manners to form oxyhemoglobin. Each hemoglobin molecule can carry a maximum of for molecules of oxygen. Binding of oxygen with hemoglobin is primarily related to partial pressure of oxygen molecule.
Partial pressure of carbon dioxide, hydrogen ions concentration, and temperature are the orther factors which can interfere with this binding.
Sigmoid curve is obtained when percentage saturation of hemoglobin with oxygen is plotted against the pO2.This curve is called the oxygen dissociation curve .
And is highly useful in studying the effect of factors like pressure of carbon dioxide hydrogen ions concentration on binding of oxygen molecule with hemoglobin.
TRANSPORT OF CARBON DIOXIDE:-
Carbon dioxide is carried by hemoglobin as Carbamino-haemoglobin . This binding is related to the partial pressure of carbon dioxide.
po2 is a major factor which could affect this binding.When pco2 is high and po2 is low as in tissues, more binding of Carbon dioxide occurs whereas , when the pco2 is low and po2 is high as in the alveoli, dissociation of CO2 from carbamino-haemoglobin takes place.
MCQ TRANSPORT OF GASES class 11 for NEET/KVS PGT BIOLOGY / NVS PGT BIOLOGY EXAM 2023-2024,2025
1. The medium of transport for oxygen and carbon dioxide .
(a) blood
(b) stomach
(c) small intestine
(d) large intestine
Ans (a) blood
2. How much percentage of oxygen is transported by RBCs in the blood ?
(a) 99 %
(b) 97 %
(c) 88 %
(d) 90 %
Ans. (b) 97 %
3. The remaining ……….% of oxygen is carried in a dissolved state through the plasma.
(a) 3%
(b) 5 %
(c) 6 %
(d) all the above
Ans. (a) 3 %
4. Nearly…………….% of CO2 is transported by RBCs
(a) 20 -25 %
(b) 30 – 35 %
(c) 40 – 45 %
(d) 25 – 30 %
Ans.(a) 20 – 25 %
5. 70% of carbon dioxide is carried as in which forms ?
(a) bicarbonate
(b) carbonate
(c) acidic
(d) salty
Ans.(a) bicarbonate
6. About ……………% of CO2 is carried in a dissolved state through plasma
(a) 7 %
(b) 8 %
(c) 9 %
(d) 10 %
Ans.(a) 7 %
7. Hemoglobin is a red coloured iron containing pigment present in the
(a) RBCs
(b) WBCs
(c) platelets
(d) lymph nodes
Ans.(a) RBCs
8.Each hemoglobin molecule can carry a maximum of how many molecules of oxygen?
(a) 4
(b) 2
(c) 3
(d) 5
Ans.(a) 4
9. Which curve is obtained when percentage saturation of haemoglobin with O2 is plotted against the po2.
(a) sigmoid curve
(b) lag curve
(c) J shape curve
(d) all the above
Ans. (a) sigmoid curve
10. In alveoli , where there is po2 , which factors are flavourable for the formation of oxyhemoglobin?
(a) low pCO2
(b) lesser hydrogen ions concentration.
(c) lower temperature
(d) all the above
Ans. (d) all the above
11. In the tissue which are the conditions favourable for dissociation of oxygen from the oxyhemoglobin.
(a) low po2
(b) high pCO2
(c) high hydrogen ions concentration
(d) all the above
Ans.(d) all the above
12. Every 100 ml of oxygenated blood can deliver around ………ml of the O2 to the tissues under normal physiological conditions.
a) 10 ml
b) 5 ml
c) 15 ml
(d) 20 ml
Ans . (b) 5 ml
13. CO2 is carried by hemoglobin as
(a) carboxihaemoglobin
(b) carbamino-haemoglobin
(c) both a and b
(d) plasma
Ans.(b) Carbamino-haemoglobin
14. More binding of Carbon dioxide occurs
(a) pco2 is low
(b) pO2 is high
(c) both a and b
(d) hydrogen ions concentration
Ans. (c) both a and b
15. Every 100 ml of deoxygenated blood delivers approximately ……ml of CO2 to the alveoli.
(a) 5 ml
(b) 6 ml
(c) 4 ml
(d) 8 ml
Ans.(c) 4 ml
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16. At the tissue site where partial pressure of carbon dioxide is high due to catabolism , carbon dioxide diffuses into blood and forms
(a) HCO3- and H+
(b) H2O
(c) CO2
(d) all the above
Ans.(a) HCO3- and H+
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