Question

• what makes amino acids different?
• amino acids form: ______________ (2 amino acids)

__________________________ (long chain of amino acids)

• in a condensation reaction, 2 amino acids form a covalent bond called a ____________ __________. this bond produces ____________.

1. enzymes:

• what are enzymes?
• enzyme reactions depend on a physical fit between the enzyme molecule and its ______________.
• draw a lock and key model of enzyme action (fig. 3-13)

Explanation:

Amino acids differ by their side - chains (R - groups). Two amino acids form a dipeptide, a long chain of amino acids forms a polypeptide. In a condensation reaction, two amino acids form a peptide bond and produce water. Enzymes are biological catalysts. Enzyme reactions depend on a physical fit between the enzyme molecule and its substrate. The lock - and - key model shows the specific binding of an enzyme to its substrate.

Answer:

• What makes amino acids different? Side - chains (R - groups)
• Amino acids form: Dipeptide (2 amino acids), Polypeptide (long chain of amino acids)
• In a condensation reaction, 2 amino acids form a covalent bond called a Peptide bond. This bond produces Water.
• What are enzymes? Biological catalysts
• Enzyme reactions depend on a physical fit between the enzyme molecule and its Substrate.
• (Note: Cannot draw here but the lock - and - key model shows enzyme - substrate specificity)