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 describes the structural difference between a saturated fat and an unsaturated fat?

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

Saturated fats contain phosphate groups, whereas unsaturated fats do not.

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

Saturated fats have shorter fatty acid chains than unsaturated fats.

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Verified step by step guidance

Step 1: Begin by understanding the structural composition of saturated and unsaturated fats. Saturated fats consist of fatty acid chains where all carbon atoms are connected by single bonds, resulting in a straight chain structure. Unsaturated fats, on the other hand, contain one or more double bonds between carbon atoms, which introduce kinks or bends in the chain.

Step 2: Analyze the physical properties of saturated and unsaturated fats. Saturated fats are typically solid at room temperature due to their straight chains, which allow them to pack tightly together. Unsaturated fats are usually liquid at room temperature because the kinks in their chains prevent tight packing.

Step 3: Evaluate the chemical composition of saturated and unsaturated fats. Saturated fats do not contain double bonds, while unsaturated fats have one or more double bonds. These double bonds can be in cis or trans configurations, affecting the molecule's shape and properties.

Step 4: Consider the incorrect options provided in the problem. For example, saturated fats do not contain phosphate groups, and the length of fatty acid chains is not a defining characteristic of saturated versus unsaturated fats.

Step 5: Conclude that the correct description of the structural difference is: Saturated fats have only single bonds between carbon atoms in their fatty acid chains, while unsaturated fats contain one or more double bonds.