Carbon dioxide is transported via blood to the lungs mostly :
Correct answer: C. In the form of bicarbonate ions
- A. In combination with haemoglobin only
- B. Dissolved in blood plasma
- C. In the form of bicarbonate ions
- D. As carbaminohaemoglobin and as carbonic acid
Explanation
Most of the carbon dioxide in the blood is transported to the lungs as bicarbonate ions, formed when CO₂ reacts with water in red blood cells. Smaller amounts are carried bound to hemoglobin as carbaminohemoglobin or dissolved directly in plasma.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Respiration
The human respiratory system includes the air passages, lungs, alveoli and breathing muscles, while gaseous exchange explains how oxygen enters blood and carbon dioxide leaves it by diffusion. The effects of smoking include damage to cilia and alveoli, reduced gas exchange, chronic bronchitis, emphysema and increased risk of lung cancer.
Practise Respiration
446 free Respiration MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Respiration questions
In the lungs, the air is separated from the venous blood through:
The function of cilia in the respiratory passage is to keep the airways clear of:
In which plant tissue does photosynthesis primarily occur?
Which of the following functions is not associated with the Nasal Cavity?
A cavity bounded by the ribs and diaphragm is called:
Each sentence below has a blank indicating that something has been omitted. Choose the word that best fits in with the meaning of the sentence as a whole.Because the committee issued its report that authenticated our actions, we felt _.