Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

20. Carbohydrates

Classification of Carbohydrates

GOB Chemistry

20. Carbohydrates

Classification of Carbohydrates

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1:43 minutes

Problem 2a

Textbook Question

Classify the following carbohydrates as a monosaccharide, disaccharide, oligosaccharide, or polysaccharide:
(a) raffinose, a soluble fiber containing three carbohydrate units

Verified step by step guidance

Understand the classification of carbohydrates: Carbohydrates are classified based on the number of sugar units they contain. Monosaccharides have one sugar unit, disaccharides have two, oligosaccharides have 3-10 sugar units, and polysaccharides have more than 10 sugar units.

Identify the number of sugar units in raffinose: The problem states that raffinose contains three carbohydrate units.

Compare the number of sugar units in raffinose to the carbohydrate classifications: Since raffinose has three sugar units, it falls within the range of 3-10 sugar units, which corresponds to oligosaccharides.

Conclude the classification: Based on the number of sugar units, raffinose is classified as an oligosaccharide.

Review the definition of oligosaccharides for clarity: Oligosaccharides are carbohydrates composed of 3-10 monosaccharide units linked by glycosidic bonds. This matches the description of raffinose.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Monosaccharides

Monosaccharides are the simplest form of carbohydrates, consisting of single sugar molecules. They serve as the building blocks for more complex carbohydrates. Common examples include glucose and fructose, which are vital for energy production in living organisms.

Disaccharides

Disaccharides are carbohydrates formed by the combination of two monosaccharide molecules through a glycosidic bond. They are commonly found in nature and include sucrose (table sugar) and lactose (milk sugar). Disaccharides are broken down into their monosaccharide components during digestion.

Oligosaccharides

Oligosaccharides are carbohydrates composed of 3 to 10 monosaccharide units linked together. They are often found in beans, legumes, and certain vegetables, and can serve as prebiotics, promoting gut health. Raffinose, mentioned in the question, is an example of an oligosaccharide made up of three sugar units: galactose, glucose, and fructose.

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