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Why is active transport important?

Inside an organism, the liquids outside and inside the various cells have different substances in them. In the lipid bilayer, cells have thousands of proteins embedded. Certain proteins are designed to move certain substances. For example, one protein does not carry calcium ions but does move glucose. Sometimes, the concentration of liquid inside the cell is different than the concentration outside the cell, which creates a concentration gradient. It takes more energy to move substances from an area of lower concentration to an area of higher concentration.\nSome toxins block the proteins from..

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What is lycopodium clavatum used for?

Also known as wolf's-foot club moss, stag's-horn club moss, foxtail club moss, running club moss and running ground-pine, lycopodium clavatum's pollen is used to make a homeopathic remedy that acts on soft tissues, blood vessels, bones, joints, the liver and the heart. Other commercial uses of the lycopodium powder are as coating for pills and in fine dusting of surgical gloves to lubricate the latex.

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What unit is used to measure humidity?

Absolute humidity is the mass of water vapor in the air divided by the mass of dry air. Relative humidity is a more common method of expressing humidity, and it is the current absolute humidity divided by the maximum possible absolute humidity at the current temperature, expressed as a percentage. A relative humidity of 45 percent is the point at which humans tend to be most comfortable.

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What pipe sizes are used in the natural gas pipeline network?

The Type K table lists the diameters of copper tubing for natural gas, with the smallest nominal pipe diameter for this material being ? inch and the largest being 1 ? inches. Another series of copper tubing, Type L, is made of a stronger grade of copper and is thus thinner, although the nominal diameters in this size are identical to Type K.\nLow pressure natural gas pipeline capacity can be calculated using the empirical Spitzglass formula, which accounts for the natural gas flow capacity (cfh), the pressure drop in water column, the pipe length in feet, an empirical factor (k) calculated fr..

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What gas turns limewater milky?

Carbon dioxide, an odorless, non-flammable and colorless gas, is not reactive chemically. However, if the concentration of carbon dioxide is high, it can be an asphyxiant and a toxic gas that can cause irritation of the nose, throat and eyes.\nWhen calcium carbonate or limestone is heated at temperatures of around 1,100 to 1,200 degrees Celsius, limestone can be quickly converted into carbon dioxide and lime or calcium oxide. When lime dissolves in water, it becomes slaked lime. Both slaked lime and lime are used for lessening sulfur emissions in gas-fired and coal power stations.

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What is the hepatic flexure?

When a doctor performs a colonoscopy from inside the large intestine, the hepatic flexure looks like a bluish, triangular shape on the camera image, notes TREC. The doctor cannot examine the liver from this point, but it serves as a landmark within the colon that lets the doctor know where the endoscope is within the organ.\nThe hepatic flexure is where the ascending colon, moving upwards, turns to take waste across the transverse colon, moving across the abdomen from right to left. One of the lowest points of the liver touches the colon at the hepatic flexure, according to WebMD.\nThe hepatic..

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How do rogue waves form?

Scientists have studied constructive interference and its effect on rogue waves. When swells traveling across the ocean at different speeds and directions pass each other, they sometimes collide. This causes their crests, troughs and lengths to reinforce each other, creating towering waves that disperse quickly. However, if these swells are traveling in the same direction, these giant waves can last for a few minutes.\nAnother cause of rogue waves is the focusing of wave energy. Storms create waves that go against the normal wave direction, shortening the wave frequency. This can cause waves t..

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What are uniaxial joints?

Uniaxial joints contrast with biaxial joints that allow for motion around two main axes. In a biaxial joint, the main axes around which motion is possible are at right angles to one another. The Free Dictionary lists numerous other types of joints, including synovial joints that enable free motion due to the presence of an articular capsule containing synovial membrane that surrounds the point at which the bones meet one another.

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How do you use mass (in mg) to determine volume occupied?

Step 1: Obtain density and convert units if needed.\nConvert the units used for mass in the density to mg and the units used for volume to cm3.\n\nStep 2: Modify density to account for the temperature and pressure, if needed. \nThe density of most substances is affected in some way by temperature and pressure. Fortunately, these changes are negligible for substances in a liquid or solid state and can be ignored. However, when the substance in question is a gas, temperature and pressure are essential components of density and the correct density will need to be calculated based on the Ideal Gas..

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Did Isaac Newton use other scientists' ideas to help him?

ScienceNow writes that Hooke wrote to Newton in 1679 to seek Newton's help developing theories about planetary motion. Hooke's own research had determined the primary physical principles of planetary motion in space, but he had difficulty in calculating orbital motion within a central field of force. Hooke wrote to Newton regarding the problem, and then Newton made this discovery a cornerstone of his landmark Principia treatise.\nNewton did not appreciate the accusations Hooke made about ideas being misappropriated and later took his revenge. Isaac Newton eventually became the presid..

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