Multiple Choice
Which of the following nitrogenous bases is classified as a purine?
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- 1. A Review of General Chemistry6h 54m
- Orgo 1: Pre-Course Review25m
- What is Organic Chemistry?10m
- Atomic Structure24m
- Wave Function9m
- Molecular Orbitals25m
- Sigma and Pi Bonds18m
- Octet Rule25m
- Bonding Preferences21m
- Formal Charges11m
- Skeletal Structure19m
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- Types of Stereoisomers18m
- Atropisomers24m
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- 11. Radical Reactions2h 57m
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- 20. Phenols55m
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- 22. Carboxylic Acid Derivatives: NAS3h 1m
- COOH Derivatives and Nucleophilic Acyl Substitution7m
- Carboxylic Acid Nomenclature11m
- Diacid Nomenclature6m
- Ester Nomenclature7m
- Nitrile Nomenclature3m
- Acid Chloride Nomenclature5m
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- Amide Nomenclature5m
- Nucleophilic Acyl Substitution – The Three Rules18m
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- Lactones, Lactams and Cyclization Reactions12m
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- Review of Nitriles46m
- 23. The Chemistry of Thioesters, Phophate Ester and Phosphate Anhydrides1h 10m
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- Alpha Carbons and Tautomerization9m
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- Enolates4m
- Acid-Catalyzed Alpha-Halogenation4m
- Base-Catalyzed Alpha-Halogenation3m
- Haloform Reaction8m
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- Overview of α-Carbon Alkylations and Acylations6m
- Enolate Alkylation and Acylation12m
- Enamine Alkylation and Acylation16m
- Beta-Dicarbonyl Synthesis Pathway7m
- Acetoacetic Ester Synthesis13m
- Malonic Ester Synthesis12m
- 25. Condensation Chemistry2h 23m
- 26. Amines1h 43m
- 27. Heterocycles2h 0m
- Nomenclature of Heterocycles15m
- Acid-Base Properties of Nitrogen Heterocycles10m
- Reactions of Pyrrole, Furan, and Thiophene13m
- Directing Effects in Substituted Pyrroles, Furans, and Thiophenes16m
- Addition Reactions of Furan8m
- EAS Reactions of Pyridine17m
- SNAr Reactions of Pyridine18m
- Side-Chain Reactions of Substituted Pyridines20m
- 28. Carbohydrates6h 25m
- Monosaccharide20m
- Monosaccharides – D and L Isomerism9m
- Monosaccharides – Drawing Fischer Projections18m
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- Monosaccharides – N-Glycosides22m
- Monosaccharides – Reduction (Alditols)14m
- Monosaccharides – Weak Oxidation (Aldonic Acid)9m
- Monosaccharides – Reducing Sugars25m
- Monosaccharides – Strong Oxidation (Aldaric Acid)11m
- Monosaccharides – Oxidative Cleavage (Periodic Acid)29m
- Monosaccharides – Osazones10m
- Monosaccharides – Modern Kiliani-Fischer Synthesis25m
- Monosaccharides – Wohl Degradation12m
- Monosaccharides – Ruff Degradation13m
- Condensation Into Disaccharide32m
- Polysaccharides11m
- 29. Amino Acids4h 20m
- Introduction to Proteins20m
- Amino Acid Configuration14m
- The 20 Amino Acids - Introduction14m
- Amino Acid Chart1h 14m
- Acid-Base Properties of Amino Acids35m
- Isoelectric Point15m
- Amino Acid Synthesis: HVZ Method12m
- Synthesis of Amino Acids: Acetamidomalonic Ester Synthesis16m
- Synthesis of Amino Acids: N-Phthalimidomalonic Ester Synthesis13m
- Synthesis of Amino Acids: Strecker Synthesis13m
- Reactions of Amino Acids: Esterification7m
- Reactions of Amino Acids: Acylation3m
- Reactions of Amino Acids: Hydrogenolysis6m
- Reactions of Amino Acids: Ninhydrin Test11m
- 30. Peptides and Proteins2h 42m
- Peptides12m
- Primary Protein Structure4m
- Secondary Protein Structure17m
- Tertiary Protein Structure11m
- Disulfide Bonds17m
- Quaternary Protein Structure10m
- Summary of Protein Structure7m
- Intro to Peptide Sequencing2m
- Peptide Sequencing: Partial Hydrolysis25m
- Peptide Sequencing: Partial Hydrolysis with Cyanogen Bromide7m
- Peptide Sequencing: Edman Degradation28m
- Merrifield Solid-Phase Peptide Synthesis18m
- 31. Catalysis in Organic Reactions1h 30m
- 32. Lipids 2h 50m
- 33. The Organic Chemistry of Metabolic Pathways2h 52m
- Intro to Metabolism6m
- ATP and Energy6m
- Intro to Coenzymes3m
- Coenzymes in Metabolism16m
- Energy Production in Biochemical Pathways5m
- Intro to Glycolysis3m
- Catabolism of Carbohydrates: Glycolysis27m
- Glycolysis Summary15m
- Pyruvate Oxidation (Simplified)4m
- Anaerobic Respiration11m
- Catabolism of Fats: Glycerol Metabolism11m
- Intro to Citric Acid Cycle7m
- Structures of the Citric Acid Cycle19m
- The Citric Acid Cycle35m
- 34. Nucleic Acids1h 32m
- 35. Transition Metals6h 14m
- Electron Configuration of Elements45m
- Coordination Complexes20m
- Ligands24m
- Electron Counting10m
- The 18 and 16 Electron Rule13m
- Cross-Coupling General Reactions40m
- Heck Reaction40m
- Stille Reaction13m
- Suzuki Reaction25m
- Sonogashira Coupling Reaction17m
- Fukuyama Coupling Reaction15m
- Kumada Coupling Reaction13m
- Negishi Coupling Reaction16m
- Buchwald-Hartwig Amination Reaction19m
- Eglinton Reaction17m
- Catalytic Allylic Alkylation18m
- Alkene Metathesis23m
- 36. Synthetic Polymers1h 49m
- Introduction to Polymers6m
- Chain-Growth Polymers10m
- Radical Polymerization15m
- Cationic Polymerization8m
- Anionic Polymerization8m
- Polymer Stereochemistry3m
- Ziegler-Natta Polymerization4m
- Copolymers6m
- Step-Growth Polymers11m
- Step-Growth Polymers: Urethane6m
- Step-Growth Polymers: Polyurethane Mechanism10m
- Step-Growth Polymers: Epoxy Resin8m
- Polymers Structure and Properties8m
34. Nucleic Acids
Nitrogenous Bases
Multiple Choice
Which nitrogenous bases in are complementary to each other?
A
Cytosine and Thymine
B
Guanine and Thymine
C
Adenine and Thymine
D
Adenine and Cytosine
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Verified step by step guidance1
Understand the structure of DNA: DNA is composed of two strands forming a double helix, with nitrogenous bases paired between the strands.
Identify the four nitrogenous bases in DNA: Adenine (A), Thymine (T), Cytosine (C), and Guanine (G).
Learn the base pairing rules: In DNA, bases pair specifically due to hydrogen bonding. Adenine pairs with Thymine, and Cytosine pairs with Guanine.
Apply the base pairing rules to the given options: Check each pair to see if they follow the established base pairing rules.
Recognize the correct complementary pairs: Adenine pairs with Thymine, and Cytosine pairs with Guanine, based on the base pairing rules.
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