Question

which substance found in the cytoplasm of an ameba is an inorganic compound?
1 nucleic acid
2 amino acid
3 water
4 glucose

Explanation:

To determine the inorganic compound, we recall that inorganic compounds typically lack carbon - hydrogen (C - H) bonds in their basic structure (with some exceptions like carbonates, but in biological contexts, the main inorganic compounds are things like water, salts, etc.). Nucleic acids, amino acids, and glucose are all organic compounds as they contain carbon - hydrogen bonds and are part of the carbon - based biological molecules. Water ($H_2O$) is an inorganic compound as it does not have carbon - hydrogen bonds.

Answer:

1. water