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

Previous problemNext problem

Struggling with Organic Chemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which of the following statements about prions and viroids is true?

Both prions and viroids can replicate independently within a host cell.

Prions are infectious proteins, while viroids are infectious RNA molecules.

Prions contain DNA, whereas viroids contain both DNA and RNA.

Viroids are larger than prions and contain a protein coat.

Previous problemNext problem

Verified step by step guidance

Begin by understanding the definitions of prions and viroids. Prions are infectious agents composed entirely of protein, with no nucleic acids involved. Viroids, on the other hand, are small infectious RNA molecules that lack a protein coat.

Consider the replication mechanisms of prions and viroids. Prions do not replicate independently; they propagate by inducing abnormal folding of normal cellular proteins. Viroids replicate within host cells using the host's RNA polymerase.

Evaluate the statement about prions containing DNA. Prions are purely protein-based and do not contain any DNA or RNA. This statement is incorrect.

Assess the statement regarding viroids containing both DNA and RNA. Viroids consist solely of RNA and do not contain DNA. This statement is incorrect.

Examine the statement about viroids being larger and containing a protein coat. Viroids are smaller than prions and do not have a protein coat. This statement is incorrect.