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Questions and Answers
Which enzyme is responsible for digesting polysaccharides?
Which type of carbohydrate does not require digestion before the body can use it?
What enzyme is responsible for breaking down disaccharides?
Which of the following is a disaccharide?
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What type of sugar is sucrose?
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Which enzyme is needed to break down lactose?
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Which characteristic helps classify monosaccharides?
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What type of functional group does aldose sugar end with?
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In terms of isomerism, what determines if a sugar belongs to the D or L series?
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Which sugar is commonly used as a carbohydrate supplementation for hypoglycemia?
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What are the two cyclic forms in which D-Glucose exists?
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Which suffix is used for naming aldose sugars based on the number of carbon atoms present?
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Which sugar is found in common table sugar?
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What is the main carbohydrate found in cow's milk?
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Which of the following is a result of the cleavage of starch?
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Amylose is a glucose polymer with which type of linkages?
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Why can't humans digest cellulose?
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What sugar is α-D-glucose when the OH group bonded to the new asymmetric carbon is on the right?
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Study Notes
Carbohydrate Digestion and Types
- Enzymes responsible for digesting polysaccharides are not specified, but enzymes for breaking down disaccharides and specific polysaccharides are mentioned.
- Monosaccharides, such as glucose, do not require digestion before the body can use them.
Disaccharides
- Sucrose is a type of disaccharide sugar.
- Lactose is a disaccharide that requires the enzyme lactase to break it down.
Monosaccharides
- Monosaccharides can be classified based on the number of carbon atoms present, with aldose sugars ending with an aldehyde functional group.
- The position of the OH group on the asymmetric carbon determines whether a sugar belongs to the D or L series.
- α-D-glucose has the OH group bonded to the new asymmetric carbon on the right.
Glucose
- D-Glucose exists in two cyclic forms.
- The suffix -ose is used for naming aldose sugars based on the number of carbon atoms present.
- D-Glucose is found in common table sugar.
Milk and Starch
- Lactose is the main carbohydrate found in cow's milk.
- Maltose is a result of the cleavage of starch.
- Amylose is a glucose polymer with α-1,4-glycosidic linkages.
Cellulose
- Humans cannot digest cellulose due to the β-1,4-glycosidic linkages.
Other Sugars
- D-Glucose is commonly used as a carbohydrate supplementation for hypoglycemia.
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Description
Test your knowledge on the classification of monosaccharides based on the presence of aldehyde or ketone groups, as well as the number of carbon atoms in the molecule. Learn about aldoses (e.g., glucose) with aldehyde groups and ketoses (e.g., fructose) with keto groups.
