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

Lipid molecules are primarily composed of which three elements?

Carbon, nitrogen, and sulfur

Hydrogen, oxygen, and phosphorus

Nitrogen, oxygen, and calcium

Carbon, hydrogen, and oxygen

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Verified step by step guidance

Understand the composition of lipids: Lipids are a class of biomolecules primarily composed of long hydrocarbon chains or rings, which are nonpolar and hydrophobic. They are essential for energy storage, cell membrane structure, and signaling.

Identify the key elements in lipids: Lipids are primarily made up of carbon (C), hydrogen (H), and oxygen (O). These elements form the backbone of fatty acids and other lipid structures.

Eliminate incorrect options: Review the given options and eliminate choices that include elements not typically found in lipids, such as nitrogen, sulfur, phosphorus, or calcium.

Focus on the correct option: The correct answer is 'Carbon, hydrogen, and oxygen,' as these are the primary elements that make up lipid molecules.

Relate to real-world examples: Common lipids like triglycerides and phospholipids consist of glycerol (containing C, H, and O) and fatty acid chains (also composed of C, H, and O). This reinforces the understanding of lipid composition.