WILL MARK BRAINLEIST IF RIGHT (need help asap, on timed test)
Describe the following protein molecule's structure by its major components.

a) 3 amino acids joined by 3 peptide bonds
b) 3 amino acids joined by 2 peptide bonds
c) 2 amino acids joined by 3 peptide bonds
d) 2 amino acids joined by 2 peptide bonds