Final answer:
The suffix '-ose' is used in the names of most carbohydrates, indicating that they are sugars such as glucose, fructose, and galactose.
Step-by-step explanation:
The suffix used in the names of most carbohydrates is -ose. Monosaccharides, which are the simplest form of carbohydrates, often include this suffix in their names to indicate that they are sugars. For example, glucose, fructose, and galactose are all monosaccharides with names ending in "-ose". These are further classified into aldose or ketose based on whether they contain an aldehyde or a ketone group respectively. The number of carbon atoms can range from three to six, designating them as trioses, pentoses, or hexoses accordingly.