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 a ribozyme?

A lipid molecule involved in membrane structure

An RNA molecule that acts as a catalyst in biochemical reactions

A protein that binds to DNA to regulate gene expression

A DNA sequence that codes for ribosomal RNA

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Verified step by step guidance

Understand the term 'ribozyme': A ribozyme is a type of RNA molecule that has catalytic activity, meaning it can speed up biochemical reactions without being consumed in the process.

Differentiate ribozymes from other biomolecules: Unlike proteins (which are the most common biological catalysts), ribozymes are made of RNA and not amino acids.

Identify the role of ribozymes: Ribozymes are involved in processes such as RNA splicing, translation, and other RNA-related biochemical reactions. They are not lipids, DNA sequences, or proteins.

Analyze the options provided: Eliminate choices that do not describe an RNA molecule with catalytic activity. For example, lipids are involved in membrane structure, proteins regulate gene expression, and DNA sequences code for ribosomal RNA.

Select the correct description: The correct answer is 'An RNA molecule that acts as a catalyst in biochemical reactions,' as this accurately defines a ribozyme.