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 one of the following is NOT a form of carbohydrate?

Glycogen

Starch

Cholesterol

Cellulose

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Verified step by step guidance

Step 1: Understand the definition of carbohydrates. Carbohydrates are organic molecules composed of carbon, hydrogen, and oxygen, 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 listed options. Glycogen, starch, and cellulose are all polysaccharides, which are complex carbohydrates made up of monosaccharide units linked by glycosidic bonds.

Step 3: Examine the chemical nature of cholesterol. Cholesterol is a lipid, specifically a sterol, and is not classified as a carbohydrate. It is composed of a steroid nucleus and is involved in membrane structure and hormone synthesis.

Step 4: Compare the molecular structures. Carbohydrates like glycogen, starch, and cellulose have repeating sugar units, while cholesterol has a hydrophobic structure with a steroid ring system.

Step 5: Conclude that cholesterol is not a carbohydrate based on its chemical classification and structure, distinguishing it from the other options provided.