Q:

In what organelle does cellular respiration occur?

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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:

    How Is Breathing Related to Cellular Respiration?

    A:

    Cellular respiration is directly related to breathing, as breathing provides the necessary oxygen molecules for the process of cellular respiration to take place; cellular respiration is a process by which cells acquire energy. The oxygen provided by breathing is used as a final hydrogen acceptor for the process, explains Antranik.org.

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  • Q:

    What raw materials are needed for cellular respiration?

    A:

    Cellular respiration requires energy from an organic source, such as glucose and oxygen, to take place. Cellular respiration is the process by which energy is harvested from an organic source and then stored in the form of ATP to later carry out reactions in the cell. Without the organic source of energy, the reactions cannot take place. Oxygen is needed to serve as the final electron acceptor in electron transport.

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  • Q:

    Where does cell respiration take place?

    A:

    According to Hartnell College, cellular respiration takes place in the cytoplasm of cells and inside the mitochondria. Mitochondria are often called the cell’s “power plant,” because most of the process of cellular respiration takes place inside them. This process produces energy within the cell.

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  • 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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