Identify the characteristics that describe how human proteins are assembled. Check all that apply. A. Amino acids are precisely ordered.
B. Each protein is a polypeptide of at least three amino acids.
C. Amino acids consist of two components: an amino group and an acid group.
D. Human proteins are coded by combinations of twenty different amino acids.
E. Essential amino acids must be ingested in the diet because they are not produced in the body.
F. The sequence possibilities are huge in terms of how amino acids can combine.