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 the backbone of DNA?

Fructose

Glucose

Ribose

Deoxyribose

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Verified step by step guidance

Step 1: Understand the structure of DNA. DNA (Deoxyribonucleic Acid) is composed of a sugar-phosphate backbone and nitrogenous bases. The sugar in the backbone is crucial for the structure and function of DNA.

Step 2: Recall the difference between RNA and DNA. RNA contains ribose as its sugar, while DNA contains deoxyribose. Deoxyribose is a modified form of ribose where one oxygen atom is removed from the hydroxyl group at the 2' carbon.

Step 3: Analyze the options provided. Fructose and glucose are monosaccharides commonly involved in energy metabolism, but they are not part of the DNA structure. Ribose is found in RNA, not DNA.

Step 4: Focus on the term 'deoxyribose.' The prefix 'deoxy-' indicates the removal of an oxygen atom, which distinguishes deoxyribose from ribose. This sugar is specific to DNA and forms part of its backbone.

Step 5: Conclude that the correct sugar found in the backbone of DNA is deoxyribose, as it is integral to the structure of DNA and differentiates it from RNA.