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 fats (lipids) in the human body?

They are the main structural component of nucleic acids.

They catalyze biochemical reactions as enzymes.

They serve as a major energy storage molecule.

They directly encode genetic information.

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Verified step by step guidance

Understand the primary functions of fats (lipids) in the human body. Lipids are a diverse group of molecules, including triglycerides, phospholipids, and sterols, and their roles differ significantly from those of nucleic acids and proteins.

Eliminate incorrect options by analyzing the functions of other biomolecules: (1) Lipids are not the main structural component of nucleic acids; this role is fulfilled by nucleotides. (2) Lipids do not catalyze biochemical reactions; enzymes, which are proteins, perform this function. (3) Lipids do not encode genetic information; this is the role of DNA and RNA.

Focus on the correct function of lipids: Lipids serve as a major energy storage molecule. Triglycerides, a type of lipid, are stored in adipose tissue and can be broken down to release energy when needed.

Explain why lipids are efficient energy storage molecules: Lipids have a high energy density because they contain long hydrocarbon chains that can be oxidized to produce ATP. This makes them more energy-rich compared to carbohydrates or proteins.

Conclude that the correct answer is: 'They serve as a major energy storage molecule,' as this aligns with the biochemical role of lipids in the human body.