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 type of bonding is found in the backbone of nucleic acids?

Peptide bonds

Phosphodiester bonds

Disulfide bonds

Glycosidic bonds

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Verified step by step guidance

Understand the structure of nucleic acids: Nucleic acids, such as DNA and RNA, are composed of nucleotide monomers. Each nucleotide consists of a sugar molecule, a phosphate group, and a nitrogenous base.

Focus on the backbone of nucleic acids: The backbone is formed by the sugar and phosphate groups of the nucleotides, connected in a chain-like structure.

Identify the type of bond connecting the sugar and phosphate groups: The bond that links the 5' phosphate group of one nucleotide to the 3' hydroxyl group of the sugar in another nucleotide is called a phosphodiester bond.

Compare phosphodiester bonds with other types of bonds: Peptide bonds are found in proteins, disulfide bonds stabilize protein structures, and glycosidic bonds connect sugar molecules in carbohydrates. None of these are involved in the nucleic acid backbone.

Conclude that phosphodiester bonds are the correct answer: These bonds are essential for the structural integrity of DNA and RNA, forming the backbone that supports the sequence of nitrogenous bases.