Table of contents

1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
8. Protein Function 9h 41m
9. Carbohydrates7h 49m
10. Lipids5h 49m
11. Biological Membranes and Transport 6h 37m
12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway3h 12m
Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism2h 26m
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

1. Introduction to Biochemistry

Nucleic Acids

Biochemistry

1. Introduction to Biochemistry

Nucleic Acids

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Multiple Choice

Which sugar is found in DNA, and which is found in RNA?

Both DNA and RNA contain deoxyribose.

Both DNA and RNA contain ribose.

DNA contains deoxyribose; RNA contains ribose.

DNA contains ribose; RNA contains deoxyribose.

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Verified step by step guidance

Understand the structural difference between DNA and RNA: DNA stands for deoxyribonucleic acid, and RNA stands for ribonucleic acid. The names themselves hint at the type of sugar present in each molecule.

Learn the sugar components: DNA contains deoxyribose, which is a five-carbon sugar lacking one oxygen atom at the 2' position compared to ribose. RNA contains ribose, which is a five-carbon sugar with a hydroxyl (-OH) group at the 2' position.

Compare the chemical structures: Deoxyribose (C₅H₁₀O₄) has one less oxygen atom than ribose (C₅H₁₀O₅). This difference is crucial for the stability and function of DNA and RNA.

Relate the sugar to the molecule's function: The absence of the hydroxyl group in deoxyribose makes DNA more chemically stable, suitable for long-term genetic storage. The presence of the hydroxyl group in ribose makes RNA more reactive, suitable for short-term functions like protein synthesis.

Conclude the correct answer: DNA contains deoxyribose, and RNA contains ribose. This distinction is fundamental to understanding the molecular biology of nucleic acids.