Proteins: Primary Structure

Question 1

Polymer

Answer 1

• Large molecule made of many small molecules joined together
• Protein is a polymer, made of many amino acid molecules

Question 2

Amino acids structure

Answer 2

• Two reactive groups attached to central carbon atom
• Amino group ( NH2 ) ⬅️
• Carboxyl group ( C, O, OH ) ➡️
• Alpha Carbon with H atom attached ⬆️
• R group ⬇️

Question 3

Peptide link

Answer 3

• Amino acids linked together by peptide links
• Condensation reaction occurs between 2 amino acids ( water produced )
• Dipeptide formed by two amino acids linked by a peptide link
• 3 amino acids form a tripeptide
• Many amino acids form a polypeptide
• Polypeptide with 50+ amino acids is a protein