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Urea
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What is the form of nitrogenous waste that most fish give off?
Most fish excrete nitrogenous waste in the form of ammonia. Ammonia is highly toxic, but fish eliminate it primarily through the gills and some through the urine. Some fish species, particularly those living in environments with low water availability, convert ammonia to a less toxic form, such as urea or uric acid, before excreting it.
The advantage of excreting wastes as urea rather than as ammonia is that?
Urea is less toxic than ammonia.
Terrestial animals are generally either ureotelic or uricotelic not ammonotelic why?
Ammonia is a highly toxic compound. So it shouldn't be stored in an organism's body for a long time. The problem is that ammonia can only be eliminated in a solution (because it is higly soluble). Aquatic animals are sorrounded by water, so water conservation is not a problem for them. In this manner, they are continously eliminating ammonia, in some cases even through their skins. On the other hand, terrestrial animals have to conserve water. They cannot waste it, so ammonia (in a solution) can't be eliminated continously . Since ammonia is highly toxic, it has to be converted to a less toxic form, like urea or uric acid. Both of them can be eliminated when the organism has enough water to spend.
What is the organ that produces urea in our body?
The liver produces urea when it metabolises (breaks down) proteins. This is done in hepatocytes (liver cells). Amino acids are first broken down into ammonia, which is highly soluble and toxic in the blood plasma, so ammonia is joined with carbon dioxide to make urea, this is less soluble and less toxic but a build up of urea is toxic in the blood. Urea is then transported in the blood to be filtered out by the kidneys.
Is NH3 more or less stable than water?
Ammonia is less stable than water.
The least toxic of nitrogenous wastes is?
Urea is the less toxic in nature among the nitrogenous wastes where as Ammonia is 100,000 times toxic than urea.
What is the advantage of excreting nitrogenous waste in the form of ammonia?
Ammonia is less soluble than uric acid.
What is the form of nitrogenous waste that most fish give off?
Most fish excrete nitrogenous waste in the form of ammonia. Ammonia is highly toxic, but fish eliminate it primarily through the gills and some through the urine. Some fish species, particularly those living in environments with low water availability, convert ammonia to a less toxic form, such as urea or uric acid, before excreting it.
What happens if urea accumulates in the blood?
If urea accumulated in the blood, then you would probably die, because urea is technically a diluted version of ammonia, which is highly toxic.You would die because urea comes from the toxic nitrogenous waste in our body, and although less toxic, is still harmfull.
Do kidneys convert ammonia to bicarbonate ion?
Converting ammonia to bicarbonate ion seems like something an alchemist would do. Kidneys (ours, at least) convert nitrogenous wastes (things like ammonia or compounds with an amine group attached - R-NH2) to urea, which is far less toxic than ammonia.
How is your nitrogen waste different from a bird's nitrogen waste?
Ammonia has only one nitrogen per molecule, but it is quite toxic. It requires a great deal of water to be flushed out of the body. Reptiles including birds go one step further, packaging their nitrogenous waste as uric acid. That white stuff you see from a bird or a snake it has less water in the poop.
What does the kidney excrete?
the kidney is referred to as an excretory organ and excretes urea, which is a less toxic form of uric acid.
What is the product of the conversion of ammonia into a less toxic substance?
UREA
The advantage of excreting wastes as urea rather than as ammonia is that?
Urea is less toxic than ammonia.
Which blood vessel renal artery or renal vein contain less nitrogenous waste?
Renal vein.
Why is it important for the body to eliminate it's nitrogenous wastes?
Nitrogen in the body forms the chemical components of amino acids, from which all proteins are made. This includes the proteins in DNA and RNA which allow cells to reproduce. Nitrogen in the air is important because it limits the oxidation of lung tissues. Although breathing pure oxygen is not harmful at lower pressures, over time it can trigger the build-up of fluid in the lungs.
Why are white Americans less affected by toxic waste and air pollution and people of color?
They tend to have more of a say in where uncontrolled toxic waste sites are located (apex)
