condensation

Question 1

Describe how amino acids join to form a polypeptide so there is always NH2 at
one end and COOH at the other end

Answer 1

1. One amine/NH2 group joins to a
   carboxyl/COOH group to form a peptide
   bond
2. (So in chain) there is a free amine/NH2 group at one end and a free carboxyl/COOH group
   at the other