All of the following are true of carbohydrates except 1. they are the structural elements in cell walls 2. they are only found in plants and bacteria 3. they make up larger compounds like fats and amino acids 4. they serve as energy storage for organisms

The correct answer option is 3. they make up larger compounds like fats and amino acids.

Explanation:

A carbohydrate is a biological molecule that consists of carbon (C), hydrogen (H) and oxygen (O) atoms.

It is one of the 4 main macro-molecules in cells that are made largely from Carbon, Oxygen, Hydrogen and Nitrogen. Therefore, option 3. 'they make up larger compounds like fats and amino acids' is incorrect.