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

6. Enzymes and Enzyme Kinetics

Enzymes

Biochemistry

6. Enzymes and Enzyme Kinetics

Enzymes

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Multiple Choice

The enzyme reverse transcriptase was originally isolated from which type of organism?

Bacteria

Fungi

Plants

Retroviruses

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Verified step by step guidance

Understand the role of reverse transcriptase: Reverse transcriptase is an enzyme that synthesizes DNA from an RNA template, a process known as reverse transcription.

Identify the organisms capable of reverse transcription: Reverse transcription is a key feature of retroviruses, which use this enzyme to replicate their genetic material within host cells.

Eliminate incorrect options: Bacteria, fungi, and plants do not typically use reverse transcriptase as part of their replication processes. These organisms rely on DNA-dependent RNA polymerases for transcription.

Focus on retroviruses: Retroviruses, such as HIV, contain RNA genomes and depend on reverse transcriptase to convert their RNA into DNA, which integrates into the host genome.

Conclude that reverse transcriptase was originally isolated from retroviruses, as this enzyme is a defining characteristic of their replication mechanism.