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Identify the correct group of statements...

Identify the correct group of statements.
I. Oxygen is carried by haemoglobin.
II. Oxygen is carried by carbonic anhydrase.
III. `CO_(2)` is carried by haemoglobin
IV. `SO_(2)` is carried by haemoglobin.
V. Only oxygen is transported by the blood.
VI. Only `CO_(2)` is transported by the blood.
Choose the correct option :

A

I and VI

B

II and III

C

IV and V

D

I and III

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze each statement regarding the transport of gases in the blood and identify which ones are correct. 1. **Statement I: Oxygen is carried by haemoglobin.** - This statement is correct. Hemoglobin binds with oxygen in the lungs to form oxyhemoglobin, which is then transported to tissues. 2. **Statement II: Oxygen is carried by carbonic anhydrase.** - This statement is incorrect. Carbonic anhydrase is an enzyme that facilitates the conversion of carbon dioxide and water into bicarbonate and protons, but it does not carry oxygen. 3. **Statement III: CO2 is carried by haemoglobin.** - This statement is correct. Carbon dioxide can bind to hemoglobin to form carbaminohemoglobin, which is one of the ways CO2 is transported in the blood. 4. **Statement IV: SO2 is carried by haemoglobin.** - This statement is incorrect. Hemoglobin primarily carries oxygen, carbon dioxide, and carbon monoxide. It does not have a significant role in transporting sulfur dioxide (SO2). 5. **Statement V: Only oxygen is transported by the blood.** - This statement is incorrect. Blood transports both oxygen and carbon dioxide, among other substances. 6. **Statement VI: Only CO2 is transported by the blood.** - This statement is also incorrect. Blood transports both oxygen and carbon dioxide. Based on the analysis, the correct statements are: - I (Oxygen is carried by haemoglobin) - III (CO2 is carried by haemoglobin) Thus, the correct option is that only statements I and III are true. ### Final Answer: The correct group of statements is: I and III.
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