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 present in DNA, the nucleic acid typically represented by a double helix diagram?

Deoxyribose

Ribose

Fructose

Glucose

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Verified step by step guidance

Understand the structure of DNA: DNA is a nucleic acid that is typically represented as a double helix. It consists of nucleotides, which are the building blocks of DNA.

Recall the components of a nucleotide: Each nucleotide in DNA is composed of three parts: a phosphate group, a nitrogenous base, and a sugar molecule.

Identify the sugar molecule in DNA: The sugar molecule in DNA is a pentose sugar, meaning it has five carbon atoms. This sugar is specifically deoxyribose, which is distinct from ribose found in RNA.

Compare deoxyribose and ribose: Deoxyribose lacks one oxygen atom on the 2' carbon compared to ribose. This difference is crucial in distinguishing DNA from RNA.

Eliminate incorrect options: Fructose and glucose are monosaccharides commonly involved in energy metabolism, not nucleic acids. Ribose is found in RNA, not DNA. Therefore, the correct sugar in DNA is deoxyribose.