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 lipids that have a molecular skeleton made of four fused carbon rings are the:

Triglycerides

Steroids

Waxes

Phospholipids

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Verified step by step guidance

Step 1: Begin by understanding the structural characteristics of the lipids mentioned in the problem. Lipids are a diverse group of molecules, and their classification is based on their molecular structure and function.

Step 2: Analyze the molecular structure of triglycerides. Triglycerides consist of a glycerol backbone attached to three fatty acid chains. They do not have a structure made of four fused carbon rings.

Step 3: Examine the structure of waxes. Waxes are esters of long-chain fatty acids and alcohols. They are not composed of four fused carbon rings either.

Step 4: Consider the structure of phospholipids. Phospholipids have a glycerol backbone, two fatty acid chains, and a phosphate group. They also lack the four fused carbon ring structure.

Step 5: Finally, evaluate the structure of steroids. Steroids are characterized by their molecular skeleton made of four fused carbon rings. This unique structure differentiates them from other lipid types, making steroids the correct answer.