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How does cellular respiration differ from respiration?

All organisms undergo respiration and cellular respiration to support life. External respiration pertains to the inhalation of atmospheric oxygen and the exhalation of carbon dioxide into the environment. It involves three processes that primarily occur in the lungs, including ventilation, diffusion and perfusion. Internal respiration, meanwhile, refers to the exchange of oxygen carried by the red blood cells in the blood and the carbon dioxide produced by metabolic cells.Cellular respiration is categorized as either aerobic and anaerobic. The oxygen received by the cells during internal respi..

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What is the structure and function of the respiratory membrane?

The respiratory membrane contains a large surface area that is covered by thousands of smaller cell structures called alveoli. The large and permeable surface of the respiratory membrane makes it well suited for facilitating the exchange of gases that are produced and used for vital functions, such as respiration and metabolism. Gas exchange is a critical part of allowing bodies to function properly. Humans consume large quantities of oxygen, which is used by cells to produce energy and carry out basic tasks. The use of oxygen ultimately produces a waste product in the form of carbon dioxide, ..

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What are some signs to look for when determining if a chemical reaction has taken place?

These changes can be noted in two different ways, through appearance changes and energy changes.Appearance changes:Gas is releasedA solid appears or disappearsThere is a color changeEnergy changes:The temperature changesLight or flames are seenSound is heardIt is important to note that these signs are merely indicators, not proof, that a reaction has taken place and that the only true sign that a chemical reaction has occurred is the creation of one or more substances as a result of the chemical interaction.

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What is 70 degrees Fahrenheit equivalent to in Celsius?

Celsius, which is also known as Centigrade, was named after Anders Celsius. The freezing point of water is 0 degrees Celsius while its boiling point is 100 degrees Celsius. Fahrenheit was named after Daniel Gabriel Fahrenheit. The freezing point of water is 32 degrees Fahrenheit while its boiling point is 212 degrees Fahrenheit. Though the metric system is widely used by many countries, the United States still uses Fahrenheit for temperature readings.

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How do plants respond to light?

Plants begin reacting to the absence of light by producing the pair of proteins known as FHY3 and FAR1. These two proteins increase the production of another pair of proteins known as FHY1 and FHL. The plant stockpiles these proteins so that it is able to respond to the light as soon as it is available. A protein known as phytochrome A detects light on the far-red end of the spectrum, beginning the plant’s light response before humans are able to see it.\nWhen the phytochrome A is activated, it binds with FHY1 and FHL, which results in the accumulation of phytochrome A in the cell’s nucleu..

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What is a voltage follower?

The voltage follower gets its name from the way the output voltage directly follows the input voltage of the mechanism, which means that the output voltage is the same as the input voltage. For example, if 20 volts go through the amp as input, 20 volts will come out as output. Because the voltage follower acts as a buffer, it provides no attenuation to the signal.

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What are three populations commonly found in a prairie ecosystem?

Prairie dogs, which are rodents, earned their names because of their barking call. On the prairie they are common prey for predators, including coyotes, eagles and badgers. Animals such as ferrets and salamanders find shelter in prairie dogs' abandoned burrows.\nBlue grama is a relatively short prairie grass — only 12 to 14 inches when flowering — found throughout prairies. It tolerates both cold and hot temperatures as well as drought. It requires no more than 7 inches of rainfall per year.

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How is aluminum obtained?

Aluminum is the third most abundant element, behind oxygen and silicon, and the most abundant in the earth’s crust. It is the second most malleable metal behind gold and is rarely strong enough to be used alone so it is mixed with smaller quantities of manganese, magnesium, silicon, copper, and other metals to strengthen it. Currently aluminum is used in construction, in packaging, and heavily in house hold cookware. Aluminums largest market is the automotive industry. Australia is the producer of the largest amount of bauxite in the world.\nAlthough aluminum is present in dyes, food, and an..

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What factors affect the rate at which ice melts?

All substances have a triple point, a specific temperature and a specific pressure where they can exist as a solid, liquid and gas all at once. If a substance such as ice is at a temperature at which is can transition from a solid, but the pressure is too low for it to become a liquid, it transitions directly into a vapor.\nRaising the pressure on ice makes it melt at lower temperatures, while lessening the pressure makes it remain solid at higher temperatures. Impurities affect the melting point by making the liquid phase occur at lower temperatures. This is because the particles of the impur..

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Why does snow sometimes turn black?

Red snow, also commonly referred to as watermelon snow, is caused by a species of algae that grows on snow in extremely cold regions, such as near the poles or at high elevations. Yellow, green, blue or brown snow may also be caused by algae. However, brown, orange or red snow may also be caused by the snow collecting dust or sand. Although blue snow can be caused by algae, most of the time the blue color is simply an effect of ice.

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