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 compound has a glycerol head and three fatty acid tails?

Phospholipid

Sphingolipid

Triglyceride

Cholesterol

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Verified step by step guidance

Step 1: Begin by understanding the structure of the compounds listed in the problem. A triglyceride consists of a glycerol backbone attached to three fatty acid chains via ester bonds. This is a key structural feature to identify the correct compound.

Step 2: Compare the structure of a triglyceride to the other options provided. A phospholipid has a glycerol backbone but only two fatty acid tails, with a phosphate group replacing the third tail. A sphingolipid has a sphingosine backbone instead of glycerol. Cholesterol is a sterol with a completely different structure, lacking fatty acid tails.

Step 3: Focus on the defining feature of the triglyceride: the presence of a glycerol head and three fatty acid tails. This matches the description provided in the problem.

Step 4: Eliminate the other options based on their structural differences. Phospholipids and sphingolipids do not have three fatty acid tails, and cholesterol does not have a glycerol backbone or fatty acid tails.

Step 5: Conclude that the compound described in the problem, with a glycerol head and three fatty acid tails, is a triglyceride.