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chemistry

Explore the structures and functions of carbohydrates, focusing on monosaccharides, disaccharides, and polysaccharides. Learn how these organic molecules play a crucial role in providing energy and other essential functions in plants and animals.

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chemistry

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  1. chemistry

  2. 24.2 Carbohydrates • This cicada is shedding its old exoskeleton and forming a new one. An arthropod’s exoskeleton is made of a polymer called chitin, which belongs to a class of organic molecules known as carbohydrates. You will learn about the structures and functions of carbohydrates.

  3. 24.2 Monosaccharides • Monosaccharides • Where is glucose found abundantly in nature?

  4. 24.2 Monosaccharides • Carbohydrates are monomers and polymers of aldehydes and ketones that have numerous hydroxyl groups attached; they are made up of carbon, hydrogen, and oxygen.

  5. 24.2 Monosaccharides • The simplest carbohydrate molecules are called simple sugars, or monosaccharides. Glucose and fructose are examples of monosaccharides. • Glucose is abundant in plants and animals.

  6. 24.2 Monosaccharides • Carbohydrates are the most abundant sources of energy in food.

  7. 24.2 Monosaccharides

  8. 24.2 Monosaccharides

  9. 24.2 Disaccharides and Polysaccharides • Disaccharides and Polysaccharides • How can the cyclic forms of two simple sugars be linked?

  10. 24.2 Disaccharides and Polysaccharides • The cyclic forms of two simple sugars can be linked by means of a condensation reaction. • A sugar such as sucrose that forms from two monosaccharides in this way is known as a disaccharide.

  11. 24.2 Disaccharides and Polysaccharides

  12. 24.2 Disaccharides and Polysaccharides • The polymers produced by the linkage of many monosaccharide monomers are called polysaccharides. • Starches, the major storage form of glucose in plants, are polysaccharide polymers that consist of glucose monomers.

  13. 24.2 Disaccharides and Polysaccharides

  14. 24.2 Section Quiz. • 24.2.

  15. 24.2 Section Quiz. • 1. Many carbohydrates have the general formula • Cn(H2O)2n. • (COH)n. • Cn(OH)2n. • Cn(H2O)n.

  16. 24.2 Section Quiz. • 2. Sucrose is an example of a • starch. • polysaccharide. • monosaccharide. • disaccharide.

  17. 24.2 Section Quiz. • 3. Choose the correct words for the spaces. Starches are polymers formed by linking together ________ molecules in a condensation reaction that eliminates ________ molecules. • glucose, water • fructose, hydrogen • sucrose, carbon dioxide • glucose and fructose, water

  18. END OF SHOW

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