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 best distinguishes a saturated fat from an unsaturated fat?

Saturated fats contain more oxygen atoms than unsaturated fats.

Unsaturated fats have longer fatty acid chains than saturated fats.

Saturated fats are always liquid at room temperature, while unsaturated fats are always solid.

Saturated fats have only single bonds between carbon atoms in their fatty acid chains, while unsaturated fats contain one or more double bonds.

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Verified step by step guidance

Step 1: Begin by understanding the structural difference between saturated and unsaturated fats. Saturated fats have fatty acid chains where all carbon atoms are connected by single bonds, while unsaturated fats have one or more double bonds between carbon atoms in their fatty acid chains.

Step 2: Recognize the implications of these bonds. Single bonds in saturated fats allow the fatty acid chains to pack closely together, making them solid at room temperature. Double bonds in unsaturated fats create kinks in the chain, preventing tight packing and making them liquid at room temperature.

Step 3: Analyze the incorrect options provided in the question. For example, saturated fats do not contain more oxygen atoms than unsaturated fats, and the physical state at room temperature (solid or liquid) is not always consistent for all saturated or unsaturated fats.

Step 4: Focus on the correct answer. The presence of single bonds in saturated fats and double bonds in unsaturated fats is the key distinguishing feature. This structural difference affects their physical properties and biological functions.

Step 5: Conclude by emphasizing the importance of understanding the chemical structure of fatty acids in biochemistry, as it plays a critical role in their function and behavior in biological systems.