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

What is the main function of lipids in biological systems?

Energy storage

Transporting oxygen in the blood

Catalyzing biochemical reactions

Genetic information storage

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Verified step by step guidance

Understand the role of lipids in biological systems: Lipids are a diverse group of hydrophobic molecules, including fats, oils, phospholipids, and steroids. Their primary functions include energy storage, structural components of cell membranes, and signaling molecules.

Analyze the first option, 'Energy storage': Lipids, particularly triglycerides, are highly efficient energy storage molecules. They provide more energy per gram compared to carbohydrates or proteins due to their high proportion of carbon-hydrogen bonds.

Evaluate the second option, 'Transporting oxygen in the blood': This is not a function of lipids. Oxygen transport in the blood is primarily carried out by hemoglobin, a protein found in red blood cells.

Evaluate the third option, 'Catalyzing biochemical reactions': This is a function of enzymes, which are proteins, not lipids. Lipids do not act as catalysts in biochemical reactions.

Evaluate the fourth option, 'Genetic information storage': This is a function of nucleic acids (DNA and RNA), not lipids. Lipids are not involved in storing genetic information. Based on this analysis, the correct answer is 'Energy storage.'