Name the two gases which are exchanged during respiration.

Options

A. Oxygen
B. Carbondioxide
C. Nitrogen
D. Both A and B

Answer

**Step-by-Step Solution:**

1. **Understanding Respiration**: Respiration is a biological process where organisms convert food into energy. This involves the breakdown of complex compounds like carbohydrates, proteins, and fats.

2. **Role of Gases in Respiration**: During respiration, two important gases are involved in the exchange process. These gases are essential for the energy-releasing reactions that occur in cells.

3. **Identifying the Gases**: The two gases that are exchanged during respiration are:
- **Oxygen (O2)**: This gas is inhaled and used by cells to break down food and release energy.
- **Carbon Dioxide (CO2)**: This gas is produced as a waste product during the breakdown of food and is expelled from the body.

4. **Site of Gas Exchange**: The exchange of these gases occurs in the lungs, specifically in tiny air sacs called **alveoli**. The alveoli are surrounded by capillaries where the actual exchange of gases takes place.

5. **Process of Gas Exchange**: The movement of gases between the alveoli and the blood in the capillaries occurs through a process called **diffusion**. This is where oxygen enters the blood, and carbon dioxide is removed from it.

**Final Answer**: The two gases exchanged during respiration are **Oxygen (O2)** and **Carbon Dioxide (CO2)**.

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