Question

In biological systems, what would be an example of a decomposition reaction?

A)when sodium and chloride combine to make sodium chloride

B)when starch is broken down into sugars

C)when hydrogen and oxygen combine to make water

Answer 1

The best choice is C.) when hydrogen and oxygen combine to make water

Answer 2

B) when starch is broken down into sugars

Step-by-step explanation:

In living beings, decomposition reactions break down the complex substances into simpler elements. Starch is a polymer of glucose and is a large and complex molecule.

During digestion or breakdown of starch, it is broken down into its simpler constituent glucose. Since the complex sugar starch is digested into the simple sugar (glucose), it is an example of a decomposition reaction.