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

1. A Review of General Chemistry

Intro to Organic Chemistry

Organic Chemistry

1. A Review of General Chemistry

Intro to Organic Chemistry

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Multiple Choice

Which of the following reasons explains why viruses are not considered living organisms?

Viruses cannot reproduce independently without a host cell.

Viruses are capable of responding to environmental stimuli.

Viruses have a cellular structure similar to bacteria.

Viruses can perform metabolic processes on their own.

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Verified step by step guidance

Identify the characteristics that define living organisms, such as the ability to reproduce independently, respond to stimuli, have a cellular structure, and perform metabolic processes.

Examine the statement: 'Viruses cannot reproduce independently without a host cell.' Understand that reproduction is a key characteristic of living organisms, and viruses require a host cell to reproduce, which is a significant deviation from this characteristic.

Consider the statement: 'Viruses are capable of responding to environmental stimuli.' Recognize that while this is a characteristic of living organisms, it is not sufficient on its own to classify viruses as living.

Analyze the statement: 'Viruses have a cellular structure similar to bacteria.' Note that viruses do not have a cellular structure; they are composed of genetic material encased in a protein coat, unlike bacteria which are cellular.

Evaluate the statement: 'Viruses can perform metabolic processes on their own.' Understand that viruses lack the machinery for metabolism and rely entirely on the host cell for metabolic processes, which is another reason they are not considered living organisms.