Mitochondria are site of respiration first reported by Kingsbury and supported by Hogeboom.Mitochondria are related with the oxidation of :a)Carbohydratesb)Fatsc)Proteinsd)All the aboveCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

Mitochondria are eukaryotic cell organelles. Mitochondria synthesize ATP through the process of aerobic respiration. Hence, mitochondria are called powerhouse of the cell. Carbohydrates are the most common fuel used to derive energy in aerobic respiration. When carbohydrates are in short supply, fats and proteins can also be used in aerobic respiration as reduced substrates. Thus, the correct answer is option D.

Answer

Mitochondria convert stored energy in carbohydrates, fats and protein into ATP. So option D is correct

Answer

Yes mitochondria is the power house of the cell.

Answer

Mitochondria and Respiration

Mitochondria are membrane-bound organelles found in eukaryotic cells. They are often referred to as the 'powerhouses' of the cell because they are the primary sites of cellular respiration. Cellular respiration is the process by which cells convert nutrients into usable energy in the form of adenosine triphosphate (ATP).

Discovery of Mitochondria as the Site of Respiration

The discovery that mitochondria are the sites of respiration was first reported by Kingsbury in the late 1920s. He observed that mitochondria contain a large number of enzymes involved in the oxidation of various substrates. However, it was Hogeboom in the 1940s who provided further evidence to support Kingsbury's findings.

Mitochondria and the Oxidation of Carbohydrates

Carbohydrates are one of the primary sources of energy for cells. Mitochondria play a crucial role in the oxidation of carbohydrates through the process of glycolysis and the citric acid cycle (also known as the Krebs cycle or TCA cycle). During glycolysis, glucose is broken down into pyruvate, which is then transported into the mitochondria. In the mitochondria, pyruvate is further oxidized to produce ATP through the citric acid cycle.

Mitochondria and the Oxidation of Fats

Fats, or lipids, are another important source of energy for cells. Mitochondria are involved in the oxidation of fats through a process called beta-oxidation. In beta-oxidation, fatty acids are broken down into acetyl-CoA, which enters the citric acid cycle to produce ATP. This process allows cells to derive energy from stored fat molecules.

Mitochondria and the Oxidation of Proteins

Proteins can also be used as an energy source by cells. Mitochondria are involved in the oxidation of proteins through a process called protein catabolism. During protein catabolism, proteins are broken down into individual amino acids. These amino acids can then enter various metabolic pathways to produce ATP.

Mitochondria and the Oxidation of Multiple Substrates

Mitochondria are capable of oxidizing carbohydrates, fats, and proteins. This versatility allows cells to utilize different substrates depending on the availability of nutrients. By oxidizing these substrates, mitochondria generate ATP, which is used as an energy source for various cellular processes.

In conclusion, mitochondria are the sites of cellular respiration and are involved in the oxidation of carbohydrates, fats, and proteins. This versatility allows cells to utilize different substrates to produce ATP, the energy currency of the cell.

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