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

Which of the following correctly matches the lipid with its description?

Triglycerides – composed of a glycerol backbone and three phosphate groups

Phospholipids – major components of cell membranes, containing a hydrophilic head and two hydrophobic tails

Cholesterol – a fatty acid with a long unbranched hydrocarbon chain

Sphingolipids – storage form of energy in adipose tissue

Previous problemNext problem

Verified step by step guidance

Step 1: Begin by understanding the structure and function of each lipid mentioned in the problem. Lipids are a diverse group of molecules, and their descriptions are tied to their chemical structure and biological roles.

Step 2: Analyze the description of triglycerides. Triglycerides are composed of a glycerol backbone and three fatty acid chains, not phosphate groups. This description is incorrect.

Step 3: Evaluate the description of phospholipids. Phospholipids are indeed major components of cell membranes. They consist of a hydrophilic (water-attracting) head, which includes a phosphate group, and two hydrophobic (water-repelling) fatty acid tails. This description is correct.

Step 4: Examine the description of cholesterol. Cholesterol is not a fatty acid; it is a sterol, which is a type of lipid with a characteristic four-ring structure. The description provided is incorrect.

Step 5: Assess the description of sphingolipids. Sphingolipids are not primarily used for energy storage in adipose tissue; that role is fulfilled by triglycerides. Sphingolipids are involved in cell signaling and are components of the cell membrane. This description is incorrect.