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

Previous problemNext problem

Struggling with Biochemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Phospholipids differ from triglycerides in which of the following ways?

Phospholipids contain a phosphate group in place of one fatty acid chain.

Triglycerides are amphipathic molecules, while phospholipids are completely hydrophobic.

Phospholipids do not contain glycerol as a backbone.

Phospholipids have three fatty acid chains attached to glycerol.

Previous problemNext problem

Verified step by step guidance

Step 1: Begin by understanding the structure of triglycerides. Triglycerides consist of a glycerol backbone attached to three fatty acid chains via ester bonds. They are hydrophobic molecules and do not contain a phosphate group.

Step 2: Next, examine the structure of phospholipids. Phospholipids also have a glycerol backbone, but they differ from triglycerides because one of the fatty acid chains is replaced by a phosphate group, which is often linked to other polar molecules. This makes phospholipids amphipathic, meaning they have both hydrophobic and hydrophilic regions.

Step 3: Compare the amphipathic nature of phospholipids to the hydrophobic nature of triglycerides. Phospholipids have a hydrophilic phosphate group and hydrophobic fatty acid tails, while triglycerides are entirely hydrophobic.

Step 4: Address the incorrect statements in the problem. For example, phospholipids do contain glycerol as a backbone, and they do not have three fatty acid chains attached to glycerol. Additionally, triglycerides are not amphipathic molecules; they are completely hydrophobic.

Step 5: Conclude that the correct answer is: 'Phospholipids contain a phosphate group in place of one fatty acid chain,' as this accurately describes the structural difference between phospholipids and triglycerides.