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

Endosymbiotic Theory

Biochemistry

1. Introduction to Biochemistry

Endosymbiotic Theory

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Multiple Choice

According to the endosymbiotic theory, which of the following is likely the ancestor of the mitochondria?

Aerobic eukaryotes

Aerobic bacteria

Anaerobic bacteria

Cyanobacteria

Chloroplasts

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Verified step by step guidance

Understand the endosymbiotic theory: This theory suggests that certain organelles, like mitochondria and chloroplasts, originated as free-living bacteria that were engulfed by ancestral eukaryotic cells.

Identify the function of mitochondria: Mitochondria are known as the powerhouse of the cell, primarily involved in aerobic respiration, which requires oxygen to produce ATP.

Consider the characteristics of aerobic bacteria: Aerobic bacteria are capable of using oxygen for energy production, similar to the function of mitochondria in eukaryotic cells.

Evaluate the options: Aerobic eukaryotes and chloroplasts are not bacteria, and anaerobic bacteria do not use oxygen. Cyanobacteria are related to chloroplasts, not mitochondria.

Conclude that aerobic bacteria are the most likely ancestors of mitochondria, as they share the ability to perform aerobic respiration, aligning with the endosymbiotic theory.