"Mitochondrion" Essays and Research Papers

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Mitochondrion

The Mitochondrion The cell is the most basic unit of life. The cell serves as the place for processes such as cellular respiration, metabolism and energy production in the form of ATP, or adenosine triphosphate. Many organelles—small structures that help to carry out the daily operations of the cell, inhabit the cell such as the Golgi complex, the endoplasmic reticulum, the nucleus, or brain of the cell, and lysosomes. An organelle that is the place where most of the cell’s energy is generated is...

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Cellular Respiration Is the Process of Oxidizing Food Molecules, Like Glucose, to Carbon Dioxide and Water.

cristae projecting into the matrix. a small number (some 5–10) circular molecules of DNA  This electron micrograph (courtesy of Keith R. Porter) shows a single mitochondrion from a bat pancreas cell. Note the double membrane and the way the inner membrane is folded into cristae. The dark, membrane-bounded objects above the mitochondrion are lysosomes. The number of mitochondria in a cell can increase by their fission (e.g. following mitosis); decrease by their fusing together. (Defects in...

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Mitochondria

In cell biology, a mitochondrion (plural mitochondria) is a membrane-enclosed organelle found in most eukaryotic cells.[1] These organelles range from 0.5 to 1.0 micrometer (μm) in diameter. Mitochondria are sometimes described as "cellular power plants" because they generate most of the cell's supply of adenosine triphosphate (ATP), used as a source of chemical energy.[2] In addition to supplying cellular energy, mitochondria are involved in other tasks such as signaling, cellular differentiation...

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Structure and Function of Mitochondria

are absent in animal cells. It’s through the chloroplast that entry of energy to a cell takes place where sunlight is used to trap and convert carbon to sugar, which is basically chemical energy that is utilizable by plant cells. Meanwhile, the mitochondrion is an organelle that is present in plant cells and animal cells as well. Here, energy is trapped in the form of sugar by photosynthesis and is converted to a form that is more conveniently utilizable to the cell. Both the chloroplast and the mitochondria...

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Respiration

takes place not in the mitochondrion, but in the cytoplasm. During this stage, one molecule of glucose is taken and broken down into two molec ules of a compound called pyruvate (see 4.2 Glycolysis). The pyruvate produced is then transported into the mitochondrion, into the mitochondrial matrix, where the following two stages occur. The final stage then occurs across the mitochondrial matrix, the inner mitochondrial membrane and the intermembrane space of the mitochondrion. It should be noted...

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Mitochondria: Cellular Respiration and Inner Membrane

mitochondria. Each mitochondrion is enclosed by two membranes separated by an intermembrane space. The intermembrane space extends into the folds of the inner membrane called cristae which dramatically increase the surface area of the inner membrane. Cristae extend into a dense material called the matrix, an area which contains RNA, DNA, proteins, ribosomes and range of solutes. This is similar to the contents of the chloroplast stroma and like the chloroplast, the mitochondrion is a semi-autonomous...

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Mitochondria and Chloroplast Essay

adenosine triphosphate (ATP) and guanosine triphosphate (GTP), chemicals that have high-energy bonds. They are hollow all except for a folded line of matter that contains the ribonucleic acid (RNA) or deoxyribonucleic acid (DNA) of the cell. Mitochondrion make use of a process known as oxidation to make fat acids and pyruvate acid into (indirectly) ATP and Pi (inorganic phosphate). The process goes as follows: 1) Oxidation of pyruvate acid into acetyl coenzyme A. 2) Oxidation of fat acids...

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Compare Photosynthesis and Cellular Respiration

cytoplasm and mitochondrion. The chloroplast, which has two membranes around a central aqueous space, is found mainly in mesophyll cells forming the tissues in the interior of the leaf. The chloroplast is made of grana, thylakoid, and stroma. Chlorophyll, which is a green pigment, is located in the chloroplasts. The mitochondrion also has two membranes, the outer membrane and the inner membrane. Inside the inner membrane is the matrix, folded by cristae. Both chloroplast and mitochondrion also contain...

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Child Labor in Steel Industries

17) Most eukaryotic cells produce fewer than 38 ATP molecules for every glucose molecule that is oxidized by aerobic respiration is because the NADH that is made in the cytosol during glycolysis cannot diffuse through the inner membrane of the mitochondrion, it must be transported into the mitochondrial matrix. So as a result the active transport of NADH consumes ATP releasing only 36 ATP molecules. 18) Anaerobic pathway differs from the pathways of aerobic respiration at the sites they occur...

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Biology Sample Examination with Answer Keys

very high temperatures b. come apart and re-form d. replicate itself B.2. Which of the following cellular organelles breaks down complex macromolecules, such as polysaccharides and proteins? a. Golgi complex b. lysosome c. rough ER d. mitochondrion A.3. The most abundant lipid in a cell membrane a. phospholipids b. steroid c. cholesterol d. chitin B. 4. When the fluid outside a cell has a greater concentration of a given molecule than the fluid inside the cell, the external fluid is ...

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