Which of the following describes starches?

The correct description of starches is that they are complex carbohydrates made of long chains of glucose. Starches consist of numerous glucose units linked together in a way that forms a large, branched structure. This characteristic allows them to store energy in plants, which can subsequently be broken down into glucose by organisms for energy use.

Unlike simple sugars, which consist of single or double sugar units, starches are polysaccharides, which means they are made up of many sugar units. This structure makes them digestible and an important energy source for both humans and animals when they break down these long glucose chains during digestion.

Additionally, starches differ from short-chain fibers, which are primarily composed of non-digestible carbohydrates with different structural properties, and proteins, as they do not contain proteins or are not made up of amino acids like proteins are. Hence, the description of starches aligns accurately with their chemical structure and function as complex carbohydrates.