Question

• the monomer - building blocks of proteins are called amino acids.
• they are different amino acids.
• draw the basic structure that all amino acids share.
• 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 are the building - blocks of proteins. There are 20 different amino acids. They share a basic structure with an amino group, a carboxyl group, a hydrogen atom and a variable R - group (which makes them different). Two amino acids form a dipeptide, a long chain is a polypeptide. The bond between two amino acids in a condensation reaction is a peptide bond, and water is produced. Enzymes are biological catalysts. Enzyme reactions depend on a fit between the enzyme and its substrate.

Answer:

• The building blocks of proteins are called Amino Acids.
• They are 20 different amino acids.
• Basic structure: An amino group (-NH₂), a carboxyl group (-COOH), a hydrogen atom (-H) and a variable R - group.
• What makes amino acids different: The R - group.
• 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.
• (Regarding drawing the lock - and - key model, it cannot be provided in text format but should be drawn showing a specific - shaped enzyme (lock) fitting a specific - shaped substrate (key)).