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 primary function of lipids in the human body?

Encoding genetic information

Transporting oxygen in the blood

Energy storage

Catalyzing biochemical reactions

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Verified step by step guidance

Understand the primary functions of lipids in the human body. Lipids are a diverse group of biomolecules that include fats, oils, phospholipids, and steroids. Their roles are distinct from those of proteins and nucleic acids.

Recall that lipids are hydrophobic molecules, meaning they do not dissolve in water. This property makes them ideal for long-term energy storage, as they can be stored in adipose tissue without affecting the body's water balance.

Compare the functions listed in the problem: Encoding genetic information is a function of nucleic acids (DNA and RNA), not lipids. Transporting oxygen in the blood is primarily the role of hemoglobin, a protein. Catalyzing biochemical reactions is the role of enzymes, which are also proteins.

Recognize that lipids are involved in energy storage because they contain high-energy bonds in their fatty acid chains. When metabolized, these bonds release significant amounts of energy, making lipids an efficient energy reserve.

Conclude that the correct answer is 'Energy storage,' as this is a primary function of lipids in the human body, distinct from the roles of proteins and nucleic acids.