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

10. Lipids

Fatty Acids

Biochemistry

10. Lipids

Fatty Acids

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Multiple Choice

Which of the following statements is true about trans fatty acids?

Trans fatty acids increase HDL ("good") cholesterol levels in the blood.

Trans fatty acids have hydrogen atoms on opposite sides of the double bond.

Trans fatty acids are naturally abundant in most plant oils.

Trans fatty acids contain only single bonds between carbon atoms.

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Verified step by step guidance

Understand the structure of trans fatty acids: Trans fatty acids are unsaturated fatty acids that contain at least one double bond in their carbon chain. The key feature is that the hydrogen atoms attached to the carbons in the double bond are on opposite sides, giving the molecule a straighter shape compared to cis fatty acids.

Analyze the first statement: 'Trans fatty acids increase HDL ('good') cholesterol levels in the blood.' This is incorrect because trans fatty acids are known to increase LDL ('bad') cholesterol and decrease HDL ('good') cholesterol, which is harmful to cardiovascular health.

Evaluate the second statement: 'Trans fatty acids have hydrogen atoms on opposite sides of the double bond.' This is correct because the defining characteristic of trans fatty acids is the trans configuration of the double bond, where hydrogen atoms are on opposite sides.

Examine the third statement: 'Trans fatty acids are naturally abundant in most plant oils.' This is incorrect because trans fatty acids are not naturally abundant in plant oils. They are primarily formed during industrial processes like partial hydrogenation of oils.

Assess the fourth statement: 'Trans fatty acids contain only single bonds between carbon atoms.' This is incorrect because trans fatty acids are unsaturated, meaning they contain at least one double bond in their carbon chain.