National Academy of Sports Medicine (NASM) Certified Personal Trainer (CPT) Practice Exam

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Which carbohydrate is considered a disaccharide formed of glucose and glucose?

  1. Maltose

  2. Sucrose

  3. Lactose

  4. Galactose

The correct answer is: Maltose

Maltose is the correct answer because it is indeed a disaccharide composed of two glucose molecules linked together. This sugar is formed when starch is broken down, which occurs during the digestion of carbohydrates or in some food processing techniques. The bond between the two glucose units is known as an alpha bond, characteristic of maltose. In contrast, sucrose is a disaccharide made up of glucose and fructose. Lactose consists of glucose and galactose, while galactose itself is a monosaccharide. Understanding the composition of these carbohydrates is crucial when studying nutrition and their role in energy production and usage within the body.

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