Question

What nitrogenous waste is removed by the Kidneys?

Answer 1

Hint: In vertebrates, the kidneys are two reddish-brown bean-shaped organs. They are found on the left and right sides of the retroperitoneal region and measure around 12 cm in length in adults. Blood enters through the paired renal arteries and leaves through the paired renal veins. Each kidney has a ureter, which is a tube that transports expelled urine to the bladder.

Complete answer:
The physiological process of eliminating metabolic waste from the body is known as excretion. Amino acids, urea, uric acid, carbon dioxide, water, and ammonia are among the excretory products. Amino acids are excreted by certain Molluscs and Echinoderms as waste products from the body. Ammonia is the major excretory product in mammals, and it is made up of proteins found in our diet. It is the most hazardous nitrogenous waste, and most amphibians and aquatic creatures excrete it by diffusion. Urea is the nitrogenous waste excreted by mammals. It is less poisonous and has a lower water solubility. Uric acid is excreted by birds and reptiles as nitrogenous waste.
Urea is the most common excretory product of animals. Because urea is less harmful than ammonia, it may be kept for longer periods of time in the body. The excess proteins in the body are destroyed by the deamination process, which removes the ${\text{N}}{{\text{H}}_{\text{2}}}$ group and converts it to ammonium ions in the liver. The ammonium ions are transformed to urea in the urea cycle. The urea produced in the liver is circulated to the kidneys, where it is eventually eliminated. It also excretes uric acid, although only in small amounts.

As a result, the right answer is 'urea'.

Note:
When wastes build in the body, the excretory system in humans expels them, which are typically poisonous. Sweating is a form of excretion that people exhibit. Sweat also aids in lowering the body's temperature, as excessive temperatures can be deadly or result in life-threatening injuries. Dogs have a relatively limited number of sweat pores and need panting to release excess body heat.