Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

23. Lipids

Cell Membranes

GOB Chemistry

23. Lipids

Cell Membranes

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Multiple Choice

Keeping in mind that unsaturated fatty acids form kinks in the phospholipid tails, what would happen if all of the unsaturated fatty acids in a lipid bilayer were replaced with saturated fatty acids?

It will become more fluid.

Its fluidity will be significantly reduced.

There will be no effect on its fluidity.

The lipid bilayer will become resistant to oxidation.

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Verified step by step guidance

Understand the structure of fatty acids: Saturated fatty acids have no double bonds between carbon atoms, resulting in straight chains. Unsaturated fatty acids contain one or more double bonds, causing kinks in their structure.

Recognize the role of fatty acids in a lipid bilayer: The kinks in unsaturated fatty acids prevent the phospholipids from packing tightly together, increasing the fluidity of the membrane.

Consider the effect of replacing unsaturated fatty acids with saturated ones: Without the kinks, saturated fatty acids allow phospholipids to pack more closely, reducing the fluidity of the membrane.

Analyze the implications of reduced fluidity: A less fluid membrane can affect the movement of proteins and lipids within the bilayer, potentially impacting membrane function and cell signaling.

Conclude the effect on the lipid bilayer: Replacing unsaturated fatty acids with saturated ones will significantly reduce the fluidity of the lipid bilayer, making it more rigid.