The majority of carbon dioxide produced by our body cells is transported to the lungs as:
Correct answer: C. As Bicarbonates
- A. Attached to haemoglobin
- B. Dissolved in the blood
- C. As Bicarbonates
- D. As Carbonates
Explanation
When systemic arterial blood flows through capillaries, carbon dioxide diffuses from the tissues into the blood. Some carbon dioxide is dissolved in the blood. Some carbon dioxide reacts with haemoglobin to form carbaminohaemoglobin. The remaining carbon dioxide is converted to bicarbonate and hydrogen ions. Most carbon dioxide is transported through the blood in the form of bicarbonate ions.
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
People who have migrated from the planes to a higher altitude area about six months back:
When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?
Asthma may be attributed to:
Haemoglobin is a type of :
The exchange of gases in the alveoli of the lungs takes place by:
The CO2 content by volume, in the atmospheric air is about: