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 is a hydrophobic material?

Glucose

Sodium chloride

Glycine

Triglyceride

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Verified step by step guidance

Understand the concept of hydrophobicity: Hydrophobic materials are substances that repel water and do not dissolve in it. They are typically nonpolar and lack charged groups, making them insoluble in polar solvents like water.

Analyze the chemical nature of each option: Glucose is a polar molecule due to its hydroxyl (-OH) groups, making it hydrophilic. Sodium chloride is an ionic compound that dissolves readily in water, also hydrophilic. Glycine, an amino acid, has both polar and charged groups, making it soluble in water.

Focus on triglycerides: Triglycerides are composed of a glycerol backbone and three fatty acid chains. Fatty acid chains are long hydrocarbon chains that are nonpolar, making triglycerides hydrophobic.

Relate hydrophobicity to biological function: Triglycerides are a type of lipid, and lipids are known for their hydrophobic properties. This characteristic allows them to form structures like cell membranes and store energy efficiently in organisms.

Conclude the reasoning: Based on the chemical properties of the options provided, triglycerides are the hydrophobic material because they are nonpolar and insoluble in water.