Amutation changing an alanine to a glycine would likely have little effect on the protein function since they are both small, amino acids.

Nonessential

Explanation:

Nonessential amino acids are amino acids that can be synthesized by humans and so they are not essential to the human diet. There are eleven nonessential amino acids which includes alanine, arginine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine.

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.