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

Lipids

Biochemistry

1. Introduction to Biochemistry

Lipids

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Multiple Choice

Which of the following molecules is made up of glycerol and fatty acids?

Triglyceride

Phosphatidylcholine

Sphingosine

Cholesterol

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Verified step by step guidance

Understand the structure of glycerol and fatty acids: Glycerol is a three-carbon molecule with hydroxyl (-OH) groups attached to each carbon, while fatty acids are long hydrocarbon chains with a carboxyl (-COOH) group at one end.

Learn how glycerol and fatty acids combine: In biochemistry, glycerol and fatty acids can form ester bonds through a dehydration reaction, where the hydroxyl group of glycerol reacts with the carboxyl group of fatty acids, releasing water.

Identify the molecule that fits this description: Triglycerides are composed of one glycerol molecule esterified to three fatty acid chains. This structure matches the combination of glycerol and fatty acids.

Compare the other options: Phosphatidylcholine contains glycerol but also includes phosphate and choline groups, making it a phospholipid. Sphingosine is a backbone molecule for sphingolipids and does not contain glycerol. Cholesterol is a sterol and does not involve glycerol or fatty acids in its structure.

Conclude that the correct answer is Triglyceride, as it is the only molecule in the list made up of glycerol and fatty acids.