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HomeHomework HelpbiologyMitochondria Structure and Function

Mitochondria Structure and Function

Mitochondria are double-membrane-bound organelles found in eukaryotic cells, primarily responsible for producing adenosine triphosphate (ATP) through cellular respiration, thereby serving as the cell's main energy source. They also play key roles in regulating metabolic processes, apoptosis, and calcium homeostasis.

intermediate
2 hours
Biology
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Mitochondria are essential organelles found in nearly all eukaryotic cells, often referred to as the powerhouses of the cell due to their role in producing ATP through cellular respiration. They have a unique double-membrane structure, with the inner membrane folded into cristae, which increases the...

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Key Terms

ATP
Adenosine triphosphate, the energy currency of the cell.

Example: Cells use ATP to perform work, like muscle contraction.

Cellular Respiration
The process by which cells convert glucose and oxygen into energy.

Example: Cellular respiration occurs in mitochondria.

Krebs Cycle
A series of chemical reactions used by all aerobic organisms to generate energy.

Example: The Krebs cycle produces electron carriers for the electron transport chain.

Electron Transport Chain
A series of protein complexes that transfer electrons to produce ATP.

Example: The electron transport chain is located in the inner mitochondrial membrane.

Cristae
The folds of the inner mitochondrial membrane that increase surface area for ATP production.

Example: Cristae are where the electron transport chain is located.

Matrix
The innermost compartment of the mitochondria, containing enzymes for the Krebs cycle.

Example: The matrix is where pyruvate is converted into acetyl-CoA.

Related Topics

Cellular Respiration
The process by which cells convert glucose into energy, involving glycolysis, the Krebs cycle, and the electron transport chain.
intermediate
Metabolism
The set of life-sustaining chemical reactions in organisms, including catabolism and anabolism.
intermediate
Genetics
The study of genes, genetic variation, and heredity in living organisms, including mitochondrial inheritance.
advanced

Key Concepts

ATP productionCellular respirationMitochondrial structureEnergy metabolism