Q:

In what organelle does cellular respiration occur?

A:

Quick Answer

Cellular respiration takes place in the mitochondria. This is where the chemical energy of glucose, carbohydrates, fats and proteins is harvested and partially captured in the form of ATP. Cellular respiration involves glycolysis, the Krebs cycle and oxidative phosphorylation via the electron transport chain. Glycolysis occurs in the cytosol, and the other two processes occur in the mitochondria. In the absence of oxygen, respiration is confined to the cytosol.

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Full Answer

An organelle is a component of the cell, such as the mitochondria, that has its own DNA. These entities evolved from independent organisms and eventually became part of the human cell. The mitochondria are referred to as cellular power plants because they generate most of the ATP the cells need for energy. In addition, mitochondria are involved with signaling, differentiation of cells and cellular growth and death.

Mitochondria have also been implicated in diseases such as cardiac dysfunction and autism as well as the aging process. These organelles are composed of particles that perform different functions. While most of human DNA is contained in the nucleus of a cell, mitochondrial DNA resembles the bacterial genome. Most eukaryotic cells, which are found in plants, animals, fungi and other life forms, contain mitochondria.

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Related Questions

  • Q:

    Which organelle is the site of cellular respiration?

    A:

    The mitochondria of the eukaryotic cells are the sites of cellular respiration and where most of the steps take place. Cellular respiration allows for the release of energy stored in chemical bonds of glucose (obtained from food) to form adenosine triphosphate, which is the energy currency of the cell.

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  • Q:

    Where does respiration occur in the cell?

    A:

    Aerobic respiration on the cellular level occurs in the cell's mitochondria, according Georgia State University. Respiration transforms pyruvate into adensoine triphosphate through the TCA cycle in mitochondria. The TCA cycle, also known as the Krebs cycle, uses enzymes to transport electrons among water, oxygen, carbon and other atoms.

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  • Q:

    Which organelle performs cellular respiration?

    A:

    According to About.com, cellular respiration takes place in the mitochondria. While mitochondria primarily exist to serve as “power plants” for the cell, converting natural resources into usable energy, they also play a role in cellular division, cell growth and cell death.

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  • Q:

    In which organelle does cellular respiration take place?

    A:

    Cellular respiration takes place in the organelles called mitochondria. The mitochondria take in glucose, a type of sugar, and change it in the presence of oxygen into an energy-rich molecule called ATP, or adenosine triphosphate. For every molecule of glucose, 36 molecules of ATP are made.

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