Question

multiple choice question
visualizing a color change as the outcome of an enzyme - mediated metabolic reaction is characteristic of ______.

○ phage typing
○ biochemical testing
○ antigen - antibody binding
○ direct antigen testing

Explanation:

• Phage typing uses bacteriophages to identify bacteria, not enzyme - mediated metabolic reactions with color change.
• Biochemical testing often involves observing color changes from enzyme - mediated metabolic reactions (e.g., using reagents that react with products of enzyme - catalyzed reactions to show a color change).
• Antigen - antibody binding is about the interaction between antigens and antibodies, not typically enzyme - mediated metabolic reactions with color change as a direct outcome of the enzyme reaction.
• Direct antigen testing is about detecting antigens, not enzyme - mediated metabolic reactions with color change from the enzyme's action.

Answer:

B. biochemical testing