In a protein molecule, the number of amino acid molecules may be as few as 5
5.000
500
50

What is the name for a substance formed in a chemical reaction

Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.

Several billion years ago which gas was the least prevailant in the atmosphere