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

The sex hormones estrogen, progesterone, and testosterone belong to which class of macromolecules?

Carbohydrates

Nucleic acids

Proteins

Lipids

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Verified step by step guidance

Understand the classification of macromolecules: Macromolecules are large molecules essential for life, and they are categorized into four main classes: carbohydrates, nucleic acids, proteins, and lipids.

Recall the structural characteristics of lipids: Lipids are hydrophobic molecules primarily composed of carbon and hydrogen atoms. They include fats, oils, phospholipids, steroids, and waxes.

Identify the chemical nature of sex hormones: Estrogen, progesterone, and testosterone are steroid hormones. Steroids are a subclass of lipids characterized by a four-ring structure known as the steroid nucleus.

Differentiate lipids from other macromolecules: Unlike carbohydrates, nucleic acids, and proteins, lipids are not polymers. Their hydrophobic nature and structural diversity distinguish them from the other macromolecule classes.

Conclude that sex hormones belong to the lipid class: Based on their steroid structure and hydrophobic properties, estrogen, progesterone, and testosterone are classified as lipids.