Which gas is crucial to all the body's cells? a. No particular gas is crucial to all the body's cells. b. nitrogen c. carbon dioxide d. oxygen

Analysis of Options

1. Option A: No particular gas is crucial to all the body's cells.

   • This option suggests that there is no essential gas, which is incorrect considering biological processes.

2. Option B: Nitrogen

   • Although nitrogen is the most abundant gas in the atmosphere, it is not used directly by body cells in metabolic processes.

3. Option C: Carbon Dioxide

   • Carbon dioxide is a byproduct of cellular respiration and is not crucial for all cells but rather a product that needs to be expelled.

4. Option D: Oxygen

   • Oxygen is essential for aerobic respiration, the primary energy-producing process in most cells. It allows cells to produce ATP, which is vital for cellular functions.

Conclusion

After analyzing the options, the only gas crucial to all the body's cells is:

Final Answer

d. oxygen