AP BIOLOGY

ANIMAL PHYSIOLOGY

EXCRETION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is urea?
A
Smaller molecules of carbohydrate
B
Smaller components of protein
C
Smaller component of fats
D
Smaller components of lipid
Explanation: 

Detailed explanation-1: -Proteins are made up of hundreds or thousands of smaller units called amino acids, which are attached to one another in long chains. There are 20 different types of amino acids that can be combined to make a protein.

Detailed explanation-2: -When you eat proteins, the body breaks them down into amino acids. Ammonia is produced from leftover amino acids, and it must be removed from the body. The liver produces several chemicals (enzymes) that change ammonia into a form called urea, which the body can remove in the urine.

Detailed explanation-3: -No, urea is not protein. Urea: Urea is a non-proteinaceous nitrogen compound that is synthesized in the liver. The ammonia produced in the body is toxic and is converted into urea via the urea cycle.

Detailed explanation-4: -Also called carbamide, urea is a colorless, crystalline compound. It is the chief nitrogenous end product resulting from the metabolic breakdown of proteins in all mammals and some fishes.

There is 1 question to complete.