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Chapter 24: Problem 67

Indicate whether each statement is true or false: (a) Maltose is a monosaccharide. (b) Polysaccharides are a type of carbohydrate. (c) All carbohydrates have an oxygen to hydrogen ratio of 1: 2 .

Short Answer

Expert verified
Statement A: False. Maltose is a disaccharide, not a monosaccharide. Statement B: True. Polysaccharides are a type of carbohydrate. Statement C: False. Although most carbohydrates have an oxygen to hydrogen ratio of 1:2, there are exceptions.

Step by step solution

01

Statement A: Maltose is a monosaccharide.

Maltose is a disaccharide, not a monosaccharide. Monosaccharides are the simplest form of carbohydrates and cannot be broken down into simpler sugars. Examples of monosaccharides are glucose, fructose, and galactose. Maltose, on the other hand, is formed by the combination of two glucose molecules. So, the statement is false.
02

Statement B: Polysaccharides are a type of carbohydrate.

Polysaccharides are indeed a type of carbohydrate. They are long chains of monosaccharide units bonded together. Examples of polysaccharides include starch, glycogen, and cellulose. So, the statement is true.
03

Statement C: All carbohydrates have an oxygen to hydrogen ratio of 1:2.

Carbohydrates are composed of carbon, hydrogen, and oxygen atoms. The general formula for carbohydrates is Cn(H2O)n, where n is the number of carbon atoms. In this formula, the oxygen to hydrogen ratio is 1:2, which is a characteristic feature of carbohydrates. However, there are exceptions, such as deoxyribose, which do not follow this ratio. Since the statement specifies "all carbohydrates," the statement is false.

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