Which Nitrogenous Waste Is Least Toxic?

Which form of nitrogenous waste is most toxic?

ammoniaNitrogenous wastes tend to form toxic ammonia, which raises the pH of body fluids.

The formation of ammonia itself requires energy in the form of ATP and large quantities of water to dilute it out of a biological system..

How is nitrogenous waste removed from the body?

For terrestrial vertebrates, nitrogenous wastes are removed from body fluids by action of the kidneys, the same organ involved in maintaining water balance. Nitrogenous waste takes three forms: ammonia – the direct waste produced as a byproduct of protein metabolism.

Which one is the most soluble in water?

ethylene glycolAmong given compounds, ethylene glycol ( HO−CH2−CH2−OH ) is the most soluble in water. Ethylene glycol has two hydroxy groups both of which form hydrogen bonds with water. Greater is the number of hydrogen bonds, greater is the extent of hydrogen bonding and greater is the solubility in water.

Where does urea produce?

liverUrea production occurs in the liver and is regulated by N-acetylglutamate. Urea is then dissolved into the blood (in the reference range of 2.5 to 6.7 mmol/liter) and further transported and excreted by the kidney as a component of urine.

Where does nitrogenous waste come from?

Nitrogenous waste products have their origin in the breakdown of proteins by cells. Cells catabolize amino acids to obtain energy. The first step of this process is deamination. During deamination, enzymes remove the amino group as ammonia (NH3).

Which of the following is the least toxic of nitrogenous wastes?

Small amount of nitrogenous waste substances are also produced during the metabolism of nucleic acids. Ammonia is the most toxic, followed by urea and uric acid. The latter is the least toxic.

Why is uric acid the least toxic nitrogenous waste?

Uric acid is also less toxic than ammonia or urea. It contains four nitrogen atoms; only a small amount of water is needed for its excretion. Out of solute, it precipitates and forms crystals. The enzyme xanthine oxidase makes uric acid from xanthine and hypoxanthine, which in turn are produced from other purines.

Which is least toxic co2 or uric acid?

Ammonia is the most toxic, followed by urea and uric acid. The latter is the least toxic.

Which is the major nitrogenous waste in human being?

ureaTwo major nitrogenous waste products, urea and ammonium (NH4+), are produced in humans when proteins are oxidized, and in this manuscript their excretions are examined from two perspectives.

Why ammonia is toxic?

When excessive amounts of ammonia enter the central nervous system, the brain’s defences are severely challenged. – A complex molecular chain reaction is triggered when the brain is exposed to excessive levels of ammonia. We have found that ammonia short-circuits the transport of potassium into the brain’s glial cells.

How is urea removed from the body?

The kidneys remove urea from the blood through tiny filtering units called nephrons. Each nephron consists of a ball formed of small blood capillaries (glomerulus) and a small tube called a renal tubule.

How ammonia is excreted from the body?

Your body treats ammonia as a waste product, and gets rid of it through the liver. It can be added to other chemicals to form an amino acid called glutamine. It can also be used to form a chemical compound called urea. Your bloodstream moves the urea to your kidneys, where it is eliminated in your urine.

Why ammonia is more toxic than urea?

Urea is a less toxic compound than ammonia; two nitrogen atoms are eliminated through it and less water is needed for its excretion. It requires 0.05 L of water to excrete 1 g of nitrogen, approximately only 10% of that required in ammonotelic organisms. Uricotelism is the ridding of excess nitrogen using uric acid .

What is the most poisonous of all waste products?

Ammonia (NH3) forms with the oxidation of amino groups. (-NH2), which are removed from the proteins when they convert into carbohydrates. It is a very toxic substance to tissues and extremely soluble in water. Only one nitrogen atom is removed with it.

Which organ removes nitrogenous waste from the body?

kidneysHumans have two kidneys and each kidney is supplied with blood from the renal artery. The kidneys remove from the blood the nitrogenous wastes such as urea, as well as salts and excess water, and excrete them in the form of urine.

What happens if ammonia is not converted to urea?

Urea is passed through the body in urine. If your body can’t process or eliminate ammonia, it builds up in the bloodstream. High ammonia levels in the blood can lead to serious health problems, including brain damage, coma, and even death. High ammonia levels in the blood are most often caused by liver disease.

Which of the nitrogenous waste is most soluble in water?

AmmoniaAmmonia is highly soluble in water, so in aquatic animals e.g., tadpole of frog, the nitrogenous waste products are excreted in the form of ammonia. In terrestrial animals e.g., adult frog, these wastes are excreted in the form of urea.

What types of wastes does the excretory system remove?

This is the job of the excretory system. You remove waste as a gas (carbon dioxide), as a liquid (urine and sweat), and as a solid.