Question: what are the defining characteristics of carbohydrates?
Answer: The compounds are made up of carbon, hydrogen, and oxygen in a ratio of 1:2:1 (CH2O) ... 
"Quick Energy" foods. ... 
Ring. ... 
Ring or line. ... 
Monosaccharide. ... 
Short term energy, structure/support, main source of energy. ... 
Monosaccharides(1 sugar), Disaccharides(2 Sugars), Polysaccharides(many sugars)