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What does a blood clot in the leg look like?

Blood clotting is sometimes essential to the body's processes. It prevents excessive bleeding when blood vessels are injured. Certain blood cells, called platelets, work together with the blood's plasma to stop bleeding by acting as a knot-shaped barrier over the injury.\nBlood clots can also occur in veins and arteries, which must remain free-flowing as an essential attribute to the body's circulatory system. These types of clots may require medical attention.

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How are archaea and bacteria different?

Some of the key differences between archaea and bacteria are:They usually live in extreme conditions. While it is possible to find bacterial extremophiles, the majority are archaea.While the bacteria phospholipid membrane features ester links between polar heads and fatty acid cells, the archaea phospholipid membrane has ether links.Bacterial cell walls contain peptidoglycan and archaea cell walls do not.There are differences between bacteria and archaea RNA. Bacterial RNA polymerase has 14 subunits only, whereas archaea has several sets of eight to 12 subunits.Bacterial tRNA forms formaldehyd..

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How big is a gram?

The SI base unit for mass is the kilogram. One gram equals 15.432 grains or 0.0352739619 U.S. ounces. One gram is nearly equal to the mass of one cubic centimeter of water.\nThe word "gram" comes from the French word, "gramme," a metric unit of weight, and "gramme" was derived from the Latin and Greek words "gramma," which mean "small weight." The word "gram" was first used in the English language in 1797, and the gramme was established as unit of the metric system by a 1799 law in France.

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How do you convert specific gravity to API?

Specific gravity is a ratio of the density of one substance to the density of another reference substance, which is usually water. API gravity itself is a specific-gravity measurement used by the oil industry to compare an oil's density to that of water. The calculation is designed to ensure consistency in measurement and is used to describe oil as light, medium, heavy or extra heavy. Light oils have an API greater than 31.1, medium oils have an API between 22.3 and 31.1, heavy oils have an API less than 22.3 and extra heavy oils have an API of less than 10.0. An oil's API rating is ..

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Why does milk curdle when acid is added?

The proteins in milk form separate groups. One end of these proteins prefers touching only fat while the other prefers touching only water. Therefore, they form groups of proteins, and the positive end, which prefers touching fat, faces inward. The other ends, then, are facing outward. The negatively charged molecules bounce off each other. The acid is positively charged, disrupting this process. Therefore, the groups of proteins, called micelles, begin to clump together, known as curdling the milk; cheese is made from the curds of milk, though the curds are usually formed through enzymes rath..

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What are examples of omnivores?

Ants are omnivorous. They eat nectar produced by plants and seeds. When given a chance, they feast on a piece of meat dropped by a human or another insect they find dead on the ground.\nHuman beings and most other mammals are omnivores. Raccoons and bears eat fruits and berries, but they also catch fish and eat insects. Humans eat a wide variety of seeds, fruits, vegetables, eggs, dairy products and meats. They also consume mushrooms and algae.\nBirds such as robins are omnivores. Their diet consists of worms, insects and berries. Chickens eat many of the same foods as robins, but they also co..

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How much does Saturn weigh?

Scientists calculate the mass of Saturn to be 568,319,000,000 trillion tonnes, which is calculated from measurements of Saturn's volume and density. Saturn's volume is around 154 times greater than the Earth's, but it is only one-eighth as dense, so the mass of Saturn is 95.161 times greater than the mass of the Earth.

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Is Nibiru real?

The idea of the Nibiru cataclysm, where a planet from the outer solar system collides with Earth, dates to 1995. Its primary creator, Nancy Lieder, refuses to give a specific date for the Nibiru cataclysm; this follows the failure of her earlier Nibiru predictions.\nNibiru's existence is rejected by modern astronomers. While numerous dwarf planets and asteroids exist past the orbit of Pluto, none is on a trajectory to collide with Earth and cause the Nibiru cataclysm.

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Is PF3 considered polar or nonpolar?

Phosphorus has five valence electrons, three of which are shared with the three fluorine atoms in PF3. The remaining two non-bonded electrons remain as a lone pair. The lone pair of electrons repels the electrons in the three covalent bonds formed between phosphorus and fluorine to give the molecule a trigonal pyramidal shape, where the fluorine atoms form the base of the pyramid.\nFluorine has a higher electronegativity than phosphorus and attracts the bonded electron pair towards itself, thus obtaining a partial negative charge. This gives phosphorus a partial positive charge, and the entire..

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How do I describe how blood clots form?

Blood clots form when blood fails to circulate adequately, according to MedicineNet. The medical term for a blood clot is "thrombosis." A thrombosis is often a healing process where the blood clot forms to repair the lining of damaged blood vessels.\nMedicineNet explains that there are several types of blood clots. Arterial thrombi form when a plaque ruptures and promotes an acute clot. Venous thrombosis occurs when prolonged immobility allows blood to pool in an extremity and clot.\nA thrombosis is diagnosed through history and a physical exam, says MedicineNet, and is often confirmed by a r..

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