Urea
Uric acid is a by product of protein digestion and can be found in the urine.
Trypsin is a proteolytic enzyme, important for the digestion of proteins. In humans, the protein is produced in its inactive form, trypsinogen, within the pancreas.Trypsinogen enters the small intestine, via the common bile duct, where it converted to active trypsin.
Some signs (or evidence) of chemical change are: a gas is produced, the temperature changes, a substance disappears, a solid is formed a colour change occurs, a new odour is produced.
Gene expression and amino acids have nothing in common so NO
No, the esophagus only functions in digestion. The trachea is the passageway for respiration.
The function of the common bile duct in a fetal pig is to move bile from the gall bladder to the small intestine. Bile is a dark green to yellowish brown fluid produced by the liver to aid in digestion.
RuBisCO is the most common protein on Earth. This protein is an enzyme.
Water is an amphoteric substance.
enzymes
Foods such as milk, eggs, meats, vegetables, cereals, soy are rich in proteins. They give essential amino acids to the human after digestion. Thus the amino acids are needed for making of our own proteins in the cell.
Common salt is a compound (NaCl), not a mixture and is a pure substance (after refining).
A neutral substance is any substance that has the same number of protons and electrons. One common neutral substance is carbon dioxide. Another common neutral substance is nitrogen gas, N2.