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What is another name for the Krebs cycle?

The Krebs cycle starts with the pyruvate produced during glycolysis. Part of the pyruvate is used to form acetyl-CoA. This reaction also produces carbon dioxide and a molecule of NADH. The acetyl-CoA combines with oxaloacetic acid to produce citric acid.\n\nThe cycle continues as a series of chemical reactions occur. Each reaction is catalyzed by an enzyme. The Krebs cycle produces high-energy molecules of ATP and NADH as well as carbon dioxide and FADH2, giving organisms the energy they need to power other chemical reactions.

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What are the main products of cellular respiration?

Photosynthesis is the process by which carbon dioxide and water are broken down to produce sugar and starches. Cellular respiration is the opposite process. Sugar and oxygen are delivered to the cells through the bloodstream. Cellular respiration is a process with three parts. The first stage is called glycolysis, and it takes place in the cytoplasm and the mitochondria, where the glucose is oxidized and the adenosine triphosphate, or ATP, is released. The Krebs or TCA cycle is the second stage. It occurs in the mitochondria. ATP is also produced in this process. In glycolysis, pyruvic acid is..

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What is the specific gravity of lead?

Specific gravity, or relative density, is a ratio that compares the density of a material to the density of water. Density is a measurement found by dividing the mass of a substance by the volume of the substance.\nSpecific gravity is usually measured at 39 degrees Fahrenheit. At this temperature, the density of water is at its highest at 8.35 pounds per gallon, and the specific gravity for water is 1.0.

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Who discovered ethanol?

According to EthanolHistory.com, Johann Tobias Lowitz was the first person known to obtain pure ethanol in 1796. He did this by filtering distilled alcohol through activated charcoal.\nAs described in EthanolHistory.com, Antoine Lavoiser knew that ethanol was made up of oxygen, hydrogen and carbon. The chemical formula, however, was discovered by Nicholas-Theodore de Saussure in the early 19th century. The structural formula of ethanol was described by Archibald Scott Couper in the 1800s.

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What are the uses of petrol?

Petrol is essential in meeting the world’s transportation needs. In addition to being used in fuels that power automobiles, heavy-duty vehicles and airplanes, it is a component in the synthetic rubber that forms their tires.\nPetroleum is used in agriculture to create the ammonia that supplies nitrogen for fertilizers. Most commercial pesticides also come from petroleum. Additionally, the shelf life of many canned foods is extended by food additives derived from petrochemicals.\nAmong home products dependent on petrol are curtains and carpets made of synthetic fibers derived from petroleum. ..

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Where are the quadriceps located?

The names of these four muscles are the rectus femoris, vastus medialis, vastus lateralis, and vastus intermedialis. In the human body, the quadriceps are strong, bulky muscles. Their main function is to help with leg extension at the knee joint, which is very important for running, walking and preventing buckling knees when standing. In particular, the rectus femoris helps flex the leg at the hip joint to make the leg move forward.

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What is the importance of platyhelminthes?

Flatworms have multiple parasitic forms that can be devastating for humans and other animals. Any fluke, including the human liver and lung flukes, is a type of flatworm. The infamous tapeworm is another very specialized form of parasitic flatworm.\nFlatworms are distinguished by their very flat shape, which is necessitated by their lack of any respiratory or circulatory systems. They must absorb all oxygen via diffusion from the surrounding air, so no cell can be too far from the surface.\nFlatworms are a very ancient group of animals, although, according to the University of California at Be..

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How is boron used?

Boron is a common element found around the world. For centuries, compounds of boron and borax have been extracted, altered and used for human purposes, primarily in the areas of medicine and industry. Boron is chalky white in appearance. Its name comes from the Arabic word for “white,” and borax, the most common form of this element, is the lightest and brightest of all kinds of boron. Boron is relatively hardy and stable, making it suitable for industrial use. In fact, it is nearly as hard as diamond and is often used as a cheaper and more practical alternative to diamond, particularly wh..

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What causes magnetism?

Atoms consist of small electrical charges called protons, neutrons and electrons. Protons are positive, neutrons are electrically neutral and electrons are negative. The electrons circle the neutrons and protons, and each has a certain amount of spin. In many atoms, the electrons spin in opposite directions, which means that the total amount of spin is cancelled out.\nIn magnetic materials, however, the electrons spin in the same direction, and the material has the potential to become magnetic. If a material such as this is placed near a magnetic object, the electrons become aligned with their..

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What is the size of spirilla bacteria?

Unlike the closely related spirochete bacteria that have similar helical shapes and somewhat flexible bodies, spirilla bacteria have fairly rigid bodies. Spirilla bacteria move by the rotation of hair-like tufts at either end called flagellum. The Helicobacter pylori, or H. pylori, bacteria is a species of spirilla bacteria that causes peptic ulcers and adenocarcinoma, a type of cancer that forms in certain glands, in humans. Other forms cause bacterial diarrhea, transmitted by undercooked poultry and shellfish and contaminated water.

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