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 pentose sugar is found in RNA?

Glucose

Ribose

Deoxyribose

Fructose

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Verified step by step guidance

Understand the structure of RNA: RNA (ribonucleic acid) is a nucleic acid composed of nucleotides, each containing a phosphate group, a nitrogenous base, and a pentose sugar.

Identify the role of the pentose sugar: The pentose sugar in RNA forms part of the nucleotide backbone, connecting the phosphate group and the nitrogenous base.

Differentiate between ribose and deoxyribose: Ribose is a pentose sugar with a hydroxyl (-OH) group attached to the 2' carbon, while deoxyribose lacks this hydroxyl group, having only a hydrogen (-H) at the 2' carbon.

Recognize that RNA contains ribose: The presence of the hydroxyl group on the 2' carbon of ribose is a distinguishing feature of RNA, making it chemically different from DNA, which contains deoxyribose.

Eliminate incorrect options: Glucose and fructose are hexose sugars (6-carbon sugars) and are not part of nucleic acids. Deoxyribose is found in DNA, not RNA. Therefore, the correct pentose sugar in RNA is ribose.