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

2. Molecular Representations

Functional Groups

Organic Chemistry

2. Molecular Representations

Functional Groups

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Multiple Choice

Which type of functional group acts as a signaling molecule in yeasts?

Ketone

Alcohol

Ester

Lipid

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Verified step by step guidance

Identify the functional groups listed in the problem: Ketone, Alcohol, and Ester.

Understand the role of each functional group: Ketones are characterized by a carbonyl group (C=O) bonded to two carbon atoms. Alcohols contain a hydroxyl group (-OH) attached to a carbon atom. Esters are derived from carboxylic acids and contain a carbonyl group adjacent to an ether linkage (RCOOR').

Recognize that the problem is asking about signaling molecules in yeasts, which are often lipids. Lipids are a broad category of molecules that include fats, oils, and certain vitamins, and they often contain ester linkages.

Consider the biological context: In yeasts, signaling molecules such as pheromones are often lipid-based, which can include ester functional groups.

Conclude that while the problem lists functional groups, the correct answer provided is 'Lipid,' indicating that the functional group most relevant to signaling in yeasts is likely to be part of a lipid structure, such as an ester.