Question

which of the following is essential to proper functioning of all prokaryotic and eukaryotic organisms?
○ o₂
○ co₂
○ atp
○ nacl

Explanation:

• \(O_2\): Not all organisms need oxygen (e.g., anaerobic organisms).
• \(CO_2\): While important for photosynthesis in autotrophs, not all organisms (like animals) rely on it for basic functioning.
• ATP: Adenosine Triphosphate is the universal energy currency in cells. Both prokaryotic and eukaryotic organisms use ATP to power cellular processes, so it is essential for their proper functioning.
• \(NaCl\): Sodium chloride (salt) is important for some physiological processes in many organisms but is not essential for the basic functioning (energy, metabolism) of all prokaryotic and eukaryotic organisms.

Answer:

C. ATP