Table of contents

1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
8. Protein Function 9h 41m
9. Carbohydrates7h 49m
10. Lipids5h 49m
11. Biological Membranes and Transport 6h 37m
12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway3h 12m
Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism2h 26m
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

1. Introduction to Biochemistry

Carbohydrates

Biochemistry

1. Introduction to Biochemistry

Carbohydrates

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Multiple Choice

Consider the figure shown below. What one characteristic is shared by sucrose and maltose?

Both are reducing sugars.

Both are disaccharides composed of two monosaccharide units.

Both contain two glucose molecules linked together.

Both are composed of glucose and galactose.

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Verified step by step guidance

Understand the structure of sucrose and maltose: Sucrose is composed of glucose and fructose, while maltose is composed of two glucose molecules linked together. Both are disaccharides, meaning they are composed of two monosaccharide units.

Review the definition of reducing sugars: Reducing sugars have a free aldehyde or ketone group that can participate in redox reactions. Sucrose is not a reducing sugar because its glycosidic bond involves the anomeric carbons of both glucose and fructose, whereas maltose is a reducing sugar because one of its glucose units has a free anomeric carbon.

Analyze the options provided: The first option states that both are reducing sugars, which is incorrect because sucrose is not a reducing sugar. The second option states that both are disaccharides composed of two monosaccharide units, which is correct based on their structures.

Evaluate the third option: It claims that both contain two glucose molecules linked together. This is incorrect because sucrose contains glucose and fructose, not two glucose molecules.

Assess the fourth option: It states that both are composed of glucose and galactose. This is incorrect because neither sucrose nor maltose contains galactose; sucrose contains glucose and fructose, and maltose contains two glucose molecules.