NEET Exam > NEET Questions > Approximately seventy per cent of carbon diox... Start Learning for Free
Approximately seventy per cent of carbon dioxide absorbed by the blood will be transported to the lungs: [NEET 2014 / AIPMT 2014 ]
- a)As bicarbonate ions
- b)In the form of dissolved gas molecules
- c)By binding to R.B.C.
- d)As carbamino - haemoglobin
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Approximately seventy per cent of carbon dioxide absorbed by the blood...
- About 70% of CO2 (about 2.5ml per 100 ml. of blood), received by blood from the tissues, enters the RBCs where it reacts with water to form carbonic acid (H2CO3).
- Carbonic anhydrase, exclusively found in RBCs, speeds up the formation of H2CO3 and rapidly converts it back to carbon dioxide and water when blood reaches the lungs. Almost as rapidly as formed, all carbonic acid of RBCs dissociates into hydrogen (H+) and bicarbonate ions (HCO-3).
Free Test
| FREE | Start Free Test |
Community Answer
Approximately seventy per cent of carbon dioxide absorbed by the blood...
Carbon Dioxide Transport in Blood
The transport of carbon dioxide (CO2) in the blood is a crucial physiological process. Approximately 70% of CO2 is transported to the lungs as bicarbonate ions. Here’s how this process works:
1. Formation of Bicarbonate Ions
- When CO2 enters the blood, it reacts with water (H2O) in the presence of the enzyme carbonic anhydrase.
- This reaction produces carbonic acid (H2CO3), which quickly dissociates into bicarbonate ions (HCO3-) and hydrogen ions (H+).
2. Role of Bicarbonate in Blood
- The bicarbonate ions are then transported in the plasma, effectively serving as a major form of CO2 transport.
- This conversion is essential as it helps maintain the pH balance of the blood and facilitates the transport of CO2 from tissues to the lungs.
3. Comparison with Other Transport Methods
- While some CO2 is transported dissolved in plasma (about 7-10%) and some binds to hemoglobin to form carbamino compounds (about 20-25%), the majority is in the form of bicarbonate.
- The binding of CO2 to hemoglobin (carbaminohemoglobin) is significant but does not account for the largest percentage of CO2 transport.
4. Importance of Bicarbonate Transport
- The bicarbonate buffer system plays a crucial role in maintaining blood pH levels and ensuring efficient respiratory function.
- Upon reaching the lungs, bicarbonate ions are converted back to CO2, which is then exhaled.
In conclusion, the predominant transport method of carbon dioxide in the blood is as bicarbonate ions, making option 'A' the correct answer.
The transport of carbon dioxide (CO2) in the blood is a crucial physiological process. Approximately 70% of CO2 is transported to the lungs as bicarbonate ions. Here’s how this process works:
1. Formation of Bicarbonate Ions
- When CO2 enters the blood, it reacts with water (H2O) in the presence of the enzyme carbonic anhydrase.
- This reaction produces carbonic acid (H2CO3), which quickly dissociates into bicarbonate ions (HCO3-) and hydrogen ions (H+).
2. Role of Bicarbonate in Blood
- The bicarbonate ions are then transported in the plasma, effectively serving as a major form of CO2 transport.
- This conversion is essential as it helps maintain the pH balance of the blood and facilitates the transport of CO2 from tissues to the lungs.
3. Comparison with Other Transport Methods
- While some CO2 is transported dissolved in plasma (about 7-10%) and some binds to hemoglobin to form carbamino compounds (about 20-25%), the majority is in the form of bicarbonate.
- The binding of CO2 to hemoglobin (carbaminohemoglobin) is significant but does not account for the largest percentage of CO2 transport.
4. Importance of Bicarbonate Transport
- The bicarbonate buffer system plays a crucial role in maintaining blood pH levels and ensuring efficient respiratory function.
- Upon reaching the lungs, bicarbonate ions are converted back to CO2, which is then exhaled.
In conclusion, the predominant transport method of carbon dioxide in the blood is as bicarbonate ions, making option 'A' the correct answer.
 | Explore Courses for NEET exam |  |
Top Courses for NEETView all
Top Courses for NEET
Question Description
Approximately seventy per cent of carbon dioxide absorbed by the blood will be transported to the lungs: [NEET 2014 /AIPMT 2014]a)As bicarbonate ionsb)In the form of dissolved gas moleculesc)By binding to R.B.C.d)As carbamino - haemoglobinCorrect answer is option 'A'. Can you explain this answer? for NEET 2026 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Approximately seventy per cent of carbon dioxide absorbed by the blood will be transported to the lungs: [NEET 2014 /AIPMT 2014]a)As bicarbonate ionsb)In the form of dissolved gas moleculesc)By binding to R.B.C.d)As carbamino - haemoglobinCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Approximately seventy per cent of carbon dioxide absorbed by the blood will be transported to the lungs: [NEET 2014 /AIPMT 2014]a)As bicarbonate ionsb)In the form of dissolved gas moleculesc)By binding to R.B.C.d)As carbamino - haemoglobinCorrect answer is option 'A'. Can you explain this answer?.
Approximately seventy per cent of carbon dioxide absorbed by the blood will be transported to the lungs: [NEET 2014 /AIPMT 2014]a)As bicarbonate ionsb)In the form of dissolved gas moleculesc)By binding to R.B.C.d)As carbamino - haemoglobinCorrect answer is option 'A'. Can you explain this answer? for NEET 2026 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Approximately seventy per cent of carbon dioxide absorbed by the blood will be transported to the lungs: [NEET 2014 /AIPMT 2014]a)As bicarbonate ionsb)In the form of dissolved gas moleculesc)By binding to R.B.C.d)As carbamino - haemoglobinCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Approximately seventy per cent of carbon dioxide absorbed by the blood will be transported to the lungs: [NEET 2014 /AIPMT 2014]a)As bicarbonate ionsb)In the form of dissolved gas moleculesc)By binding to R.B.C.d)As carbamino - haemoglobinCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Approximately seventy per cent of carbon dioxide absorbed by the blood will be transported to the lungs: [NEET 2014 /AIPMT 2014]a)As bicarbonate ionsb)In the form of dissolved gas moleculesc)By binding to R.B.C.d)As carbamino - haemoglobinCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of Approximately seventy per cent of carbon dioxide absorbed by the blood will be transported to the lungs: [NEET 2014 /AIPMT 2014]a)As bicarbonate ionsb)In the form of dissolved gas moleculesc)By binding to R.B.C.d)As carbamino - haemoglobinCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Approximately seventy per cent of carbon dioxide absorbed by the blood will be transported to the lungs: [NEET 2014 /AIPMT 2014]a)As bicarbonate ionsb)In the form of dissolved gas moleculesc)By binding to R.B.C.d)As carbamino - haemoglobinCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Approximately seventy per cent of carbon dioxide absorbed by the blood will be transported to the lungs: [NEET 2014 /AIPMT 2014]a)As bicarbonate ionsb)In the form of dissolved gas moleculesc)By binding to R.B.C.d)As carbamino - haemoglobinCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Approximately seventy per cent of carbon dioxide absorbed by the blood will be transported to the lungs: [NEET 2014 /AIPMT 2014]a)As bicarbonate ionsb)In the form of dissolved gas moleculesc)By binding to R.B.C.d)As carbamino - haemoglobinCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Approximately seventy per cent of carbon dioxide absorbed by the blood will be transported to the lungs: [NEET 2014 /AIPMT 2014]a)As bicarbonate ionsb)In the form of dissolved gas moleculesc)By binding to R.B.C.d)As carbamino - haemoglobinCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice NEET tests.
| Explore Courses for NEET exam | |
Top Courses for NEET
Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
