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 type of lipid serves as the primary energy reserve stored in the human body?

Phospholipids

Steroids

Triacylglycerols (triglycerides)

Glycolipids

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Verified step by step guidance

Understand the role of lipids in the human body: Lipids are a diverse group of molecules that include fats, oils, phospholipids, steroids, and glycolipids. They serve various functions such as energy storage, structural components of cell membranes, and signaling molecules.

Identify the primary energy storage lipid: Triacylglycerols (triglycerides) are the main form of energy storage in the human body. They consist of three fatty acid chains esterified to a glycerol backbone. These molecules are highly efficient for energy storage due to their hydrophobic nature and high energy density.

Compare the other lipid types: Phospholipids are primarily structural components of cell membranes, steroids function as signaling molecules (e.g., hormones), and glycolipids are involved in cell recognition and signaling. None of these serve as the primary energy reserve.

Explain why triacylglycerols are ideal for energy storage: Triacylglycerols are stored in adipose tissue and can be broken down during periods of energy demand. Their hydrophobic nature allows them to be stored without water, making them more space-efficient compared to glycogen, which is stored with water.

Conclude with the correct answer: Triacylglycerols (triglycerides) are the lipid type that serves as the primary energy reserve stored in the human body.