Answer to Question 1
D
Answer to Question 2
Carbohydrates are classified as either simple or complex. The simple carbohydrates
are the sugars, which consist of monosaccharides and disaccharides. Examples
of simple-carbohydrate food sources include honey and maple syrup. Complex carbohydratesstarch and fiberare long chains of sugars bonded together. Examples of their food sources are potatoes and whole-grain cereals. Carbohydrates are essential nutrients. They provide energy to the body in the form of glucose. They also spare protein from being used for calories. Fiber provides a feeling of fullness and supports regularity. Weight gain due to excess calories occurs because of the fat-sparing effect of carbohydrate. Many more metabolic steps are required to convert sugar to dietary lipids than to convert dietary lipids to body fat. This sparing effect
happens when the body continues to store its long-term energy, which consists of the dietary lipids in adipose tissue. However, if a person has eaten too much food and thus has excess unused calories, the body will store the unused blood sugars as fat.
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