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 of the following best describes the substrates digested by nucleosidase and phosphatase enzymes during nucleic acid catabolism?

Polynucleotides, breaking them into oligonucleotides

Free bases, converting them into amino acids

Nucleotides, breaking them down into nucleosides and inorganic phosphate

Nucleosides, converting them directly into free bases and ribose

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Verified step by step guidance

Understand the role of nucleosidase and phosphatase enzymes in nucleic acid catabolism. Nucleosidase enzymes act on nucleotides to break them down into nucleosides, while phosphatase enzymes remove phosphate groups, producing inorganic phosphate.

Recall the structure of nucleotides. Nucleotides consist of three components: a nitrogenous base, a sugar (ribose or deoxyribose), and one or more phosphate groups.

Recognize that nucleosidase enzymes target the bond between the nitrogenous base and the sugar, converting nucleotides into nucleosides by removing the phosphate group.

Understand that phosphatase enzymes specifically hydrolyze the phosphate group from nucleotides, resulting in the release of inorganic phosphate.

Combine the actions of nucleosidase and phosphatase enzymes: Together, they digest nucleotides into nucleosides and inorganic phosphate during nucleic acid catabolism.