Table of contents

1. A Review of General Chemistry5h 5m
2. Molecular Representations1h 14m
3. Acids and Bases2h 46m
4. Alkanes and Cycloalkanes4h 17m
5. Chirality3h 39m
6. Thermodynamics and Kinetics1h 22m
7. Substitution Reactions1h 48m
8. Elimination Reactions2h 30m
9. Alkenes and Alkynes2h 9m
10. Addition Reactions3h 19m
11. Radical Reactions1h 58m
12. Alcohols, Ethers, Epoxides and Thiols2h 42m
13. Alcohols and Carbonyl Compounds2h 17m
14. Synthetic Techniques1h 26m
15. Analytical Techniques:IR, NMR, Mass Spect7h 3m
16. Conjugated Systems6h 13m
17. Ultraviolet Spectroscopy51m
18. Aromaticity2h 34m
19. Reactions of Aromatics: EAS and Beyond5h 1m
20. Phenols55m
21. Aldehydes and Ketones: Nucleophilic Addition4h 56m
22. Carboxylic Acid Derivatives: NAS2h 51m
23. The Chemistry of Thioesters, Phophate Ester and Phosphate Anhydrides1h 10m
24. Enolate Chemistry: Reactions at the Alpha-Carbon1h 53m
25. Condensation Chemistry2h 9m
26. Amines1h 43m
27. Heterocycles2h 0m
28. Carbohydrates5h 53m
29. Amino Acids4h 20m
30. Peptides and Proteins2h 42m
31. Catalysis in Organic Reactions1h 30m
32. Lipids 2h 50m
33. The Organic Chemistry of Metabolic Pathways2h 52m
34. Nucleic Acids1h 32m
35. Transition Metals6h 14m
36. Synthetic Polymers1h 49m

3. Acids and Bases

Acids and Bases

Organic Chemistry

3. Acids and Bases

Acids and Bases

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Multiple Choice

Which of the following statements best describes the main difference between diffusion and facilitated diffusion in the context of acids and bases?

Diffusion requires energy input, while facilitated diffusion does not.

Facilitated diffusion can move substances against their concentration gradient, while diffusion cannot.

Diffusion occurs through the lipid bilayer, while facilitated diffusion requires a transport protein.

Diffusion is specific to ions, while facilitated diffusion is not.

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Verified step by step guidance

Begin by understanding the concept of diffusion: Diffusion is the passive movement of molecules from an area of higher concentration to an area of lower concentration, driven by the concentration gradient.

Next, explore facilitated diffusion: Facilitated diffusion is also a passive transport process, but it involves the use of transport proteins to move substances across the cell membrane.

Consider the role of the lipid bilayer: In simple diffusion, molecules move directly through the lipid bilayer without the need for any additional structures or energy.

Examine the necessity of transport proteins: Facilitated diffusion requires specific transport proteins embedded in the cell membrane to help certain molecules, such as ions or polar molecules, cross the membrane.

Compare the specificity and energy requirements: Both diffusion and facilitated diffusion do not require energy input, but facilitated diffusion is specific to certain molecules that cannot pass through the lipid bilayer without assistance.