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

Which of the following is NOT an example of a carbohydrate?

Sucrose

Cholesterol

Glucose

Cellulose

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Verified step by step guidance

Step 1: Understand the definition of carbohydrates. Carbohydrates are organic molecules composed of carbon (C), hydrogen (H), and oxygen (O) atoms, typically in a ratio of 1:2:1. They serve as a primary energy source and structural components in living organisms.

Step 2: Review the examples provided in the question. Sucrose, glucose, and cellulose are all carbohydrates. Sucrose is a disaccharide, glucose is a monosaccharide, and cellulose is a polysaccharide. Cholesterol, however, is a lipid, not a carbohydrate.

Step 3: Recall the structural differences between carbohydrates and lipids. Lipids, such as cholesterol, are hydrophobic molecules primarily composed of long hydrocarbon chains or rings, whereas carbohydrates have hydroxyl (-OH) groups and follow the general formula (CH₂O)n.

Step 4: Analyze the question to identify the molecule that does not fit the carbohydrate category. Cholesterol is a sterol lipid and does not share the structural or functional characteristics of carbohydrates.

Step 5: Conclude that the correct answer is cholesterol, as it is not a carbohydrate, while sucrose, glucose, and cellulose are all examples of carbohydrates.