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Is galvanized steel magnetic?

Steel is an alloy of iron and carbon, which makes it ferromagnetic due to its high iron content. Galvanized steel is made by dipping steel into molten zinc. This creates a thin protective coating that prevents corrosive materials from making direct contact with the more sensitive steel. Stainless steel that is made only with steel combined with chromium and nickel also has magnetic properties. Austentic steel is nonmagentic. This is due to the high temperatures involved in austenitization that result in the crystal structure of the iron component of steel being changed from ferrite to austenit..

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How are the scientific names of insects determined?

In taxonomy, most scientific names use Latin words to describe the type of insect or animal. In many cases, the name of the scientist or entomologist connected with the particular insect may be written next to the scientific name. The genus is capitalized and the species is in lower case letters. The classification of insects begins by assigning them to the kingdom Animalia, phylum Arthropoda and class Insecta. The Insecta class is further subdivided into orders, families, genera and species. For example, the common housefly belongs to the order called Diptera, family Muscidae, genus Musca and..

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How many muscles does it take to talk?

Each of these muscles is integral to the creation of sound from the vocal cords. Each of the thyroarytenoid muscles is contained within a thin layer of mucosa, creating the vocal cord, or fold. The right and left cords are attached to the arytenoid cartilage. The posterior cricoarytenoid muscles are responsible for opening the vocal folds. The lateral cricoarytenoid muscle is responsible for closing the vocal cords. The interarytenoid muscle plays a stabilizing role by maintaining the stability of the arytenoids.

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What are protein hydrolyzing enzymes known as?

Occurring naturally in all organisms, proteases are involved in physiological reactions. They aid in simple digestion of food proteins and create blood-clotting cascades and apoptosis pathways. Proteases can break individual peptide bonds or a complete peptide down to amino acids.\nProteases are classified into groups: serine, threonine, cysteine, aspartic acid, glutamic acid and metalloproteases. Threonine was not chronicled until 1995. Glutamic acid was not specified until 2004.

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Why do so many of Earth's volcanoes occur along plate boundaries?

As a shifting tectonic plate pushes into the mantle, which is the hot region between the core of the Earth and the crust, fluids inside the tectonic plate are released by the heat. Water, carbon dioxide and other fluids rise up into the upper part of the plate and form magma if they melt the part of the crust they come into contact with. This process occurs along plate boundaries.\nSan Andreas Fault states that as magma gets closer to the surface of the Earth's crust, hot gases build up and put pressure on the magma. When the magma finally reaches the surface, a volcano is born. Without t..

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What are soil horizons?

Six basic soil horizons exist: O, A, E, B, C and R. The O horizon is the topmost layer and contains leaf litter and decomposing matter. Horizon A is known as the topsoil. It is where seeds germinate and plants grow. Horizon E does not contain many minerals and is lighter in color. Horizon B is also known as subsoil and contains mineral deposits. Very little organic matter is found in the C horizon. The R horizon is the last layer that rests beneath all other layers.

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How do you give plasma for money?

Plasma is a substance in your blood that cannot be produced synthetically. Because of this, plasma donation is the only way for researchers to access plasma to test new treatments for rare and chronic diseases. When plasma is donated, it is actually separated from your blood. The blood, once deprived of plasma, is re-injected into your body.\nDonated plasma is used in a variety of ways. Although many plasma donations are used in research, plasma can also be used to increase blood clotting, treat burns, increase the functionality of the immune system, fight lung and liver disease, treat rabies,..

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What is the function of the renal pyramid?

Renal pyramids are conically shaped, and the point of each, called the papilla, leads into a calyx. The papilla allows urine to pass through its porous membrane in small droplets. The openings are connected to the duct of Bellini, where all the tubules of the renal pyramids converge. Between each pyramid runs a series of large arteries called the interlobar arteries. If one of these arteries become blocked, the renal pyramids can become seriously damaged.\nThe renal pyramids are atop parallel nephrons, giving the structure a striped appearance. Nephrons are the basic unit of the kidney that pr..

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What is the function of the plumule?

After an ovule undergoes fertilization, a seed develops, growing a protective layer known as the testa around the developing embryo. This embryo contains the three parts listed above. Within a short time after fertilization, the plumule becomes visible with at least two leaves that have a growing point held between them.\nWhile the formation of a solid root system is important, the development of the plumule is also instrumental in the plant's eventual thriving or failure. If the plumule develops in a normal way, the shoot emerges from the seed and works its way up through the soil and in..

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What are the physical properties of acids?

Acids are defined as substances that increase the concentration of hydrogen atoms, or more accurately, hydronium atoms (H30), in water. This ionization of acid, which is typical of all salts, is the reason acids conduct electricity. The pH values are defined as the negative logarithm of the concentration of hydronium atoms in a solution; thus acids give a pH value less than 7 because hydronium concentrations are greater than 10^-7 moles per liter. The strength of an acid, and thus its corrosiveness, is determined by how much an acid ionizes, or dissociates, into hydronium atoms in water, with ..

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