Choose whether the given statement is true or false.

Carbohydrates are complex substances.

The given statement is true.

The food that we consume contains a number of complex substances like carbohydrates which cannot be utilized by the body as such. 

These complex substances have to be broken into smaller substances like glucose, amino acids, and fatty acids.

This process of breaking down the complex components of food into simpler substances is known as digestion.

The digestive system is responsible for the breakdown and absorption of nutrients from the food we consume.