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 substances are types of lipids?

Phospholipids

Triglycerides

Hemoglobin

Cellulose

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Verified step by step guidance

Step 1: Understand the definition of lipids. Lipids are a diverse group of hydrophobic or amphipathic molecules that include fats, oils, phospholipids, steroids, and waxes. They are primarily composed of carbon, hydrogen, and oxygen atoms.

Step 2: Analyze the given substances. Phospholipids and triglycerides are well-known types of lipids. Hemoglobin is a protein, and cellulose is a carbohydrate, so they do not fall under the lipid category.

Step 3: Recall the structure and function of phospholipids. Phospholipids consist of a glycerol backbone, two fatty acid tails, and a phosphate group. They are key components of cell membranes, forming bilayers due to their amphipathic nature.

Step 4: Recall the structure and function of triglycerides. Triglycerides are composed of a glycerol molecule bonded to three fatty acid chains. They serve as energy storage molecules in organisms.

Step 5: Exclude hemoglobin and cellulose from the lipid category. Hemoglobin is a globular protein responsible for oxygen transport in the blood, while cellulose is a polysaccharide that provides structural support in plant cell walls.