15 Questions
Which substances contain carbon, hydrogen, and oxygen with the general formula CnH2nOn?
Monosaccharides
How many monosaccharide units do oligosaccharides contain?
2-10
Which of the following are examples of monosaccharides?
Glucose and fructose
What type of compounds are carbohydrates according to the new definition?
Aldehyde or ketone derivatives of polyhydric alcohols
Which classification of carbohydrates contains more than 10 monosaccharide units per molecule?
Polysaccharides
Which type of carbohydrate represents the end products of carbohydrate digestion in the human body?
Monosaccharides
How are carbohydrates classified according to the number of sugar units in the molecule?
By the number of carbon atoms
Which compounds have more than one OH group and yield aldehyde or ketone derivatives on hydrolysis?
Polyhydric alcohols
How many monosaccharide units do oligosaccharides typically contain?
2 - 10
What is the ratio of hydrogen to oxygen in carbohydrates based on the old definition?
2:1
What is the French term for carbohydrates based on their composition of hydrogen and oxygen?
Hydrates de Carbon
How are monosaccharides classified based on the number of carbon atoms?
According to the number of carbon atoms
Which type of carbohydrate represents the end products of carbohydrate digestion in the human body?
Monosaccharides
What is the general formula for carbohydrates based on the old definition?
CnH2nOn
Which classification of carbohydrates contains more than 10 monosaccharide units per molecule?
Polysaccharides
Study Notes
Carbohydrate Properties
- Substances containing carbon, hydrogen, and oxygen with the general formula CnH2nOn are carbohydrates.
- The ratio of hydrogen to oxygen in carbohydrates is 2:1, based on the old definition.
Classification of Carbohydrates
- Carbohydrates are classified according to the number of sugar units in the molecule.
- Monosaccharides are classified based on the number of carbon atoms.
- Oligosaccharides contain 2-10 monosaccharide units.
- Polysaccharides contain more than 10 monosaccharide units per molecule.
Types of Carbohydrates
- Monosaccharides are examples of carbohydrates, such as glucose, fructose, and galactose.
- Polysaccharides are examples of carbohydrates, such as cellulose, starch, and glycogen.
- Carbohydrates are classified as aldehydes or ketones based on the presence of OH groups and yield on hydrolysis.
Carbohydrate Digestion
- The end products of carbohydrate digestion in the human body are monosaccharides.
- Monosaccharides are the result of carbohydrate digestion in the human body.
French Term
- The French term for carbohydrates based on their composition of hydrogen and oxygen is "hydrates de carbone".
Test your knowledge of carbohydrate definitions with this quiz. Explore the evolution of the definition of carbohydrates from the old to the new definition and understand the chemical composition and characteristics of carbohydrates.
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