The spectrum of activity describes which of the following?

The spectrum of activity describes which of the following?

• A. Temperature range tested
• B. Time required on a surface
• C. Specific organisms tested
• D. UV wavelengths required

Answer: (C)

The spectrum of activity refers to the range of microorganisms that an antimicrobial agent is effective against. It tells you what types of organisms can be killed or inactivated by the agent (for example, bacteria, fungi, viruses, spores) and whether the agent is broad-spectrum (affecting a wide range) or narrow-spectrum (affecting only a specific group). This concept is determined by testing the agent against specific organisms to see where it has activity. The other factors listed—temperature range tested, time required on a surface, or UV wavelengths—describe test conditions or physical requirements, not the breadth of activity.

The spectrum of activity refers to the range of microorganisms that an antimicrobial agent is effective against. It tells you what types of organisms can be killed or inactivated by the agent (for example, bacteria, fungi, viruses, spores) and whether the agent is broad-spectrum (affecting a wide range) or narrow-spectrum (affecting only a specific group). This concept is determined by testing the agent against specific organisms to see where it has activity. The other factors listed—temperature range tested, time required on a surface, or UV wavelengths—describe test conditions or physical requirements, not the breadth of activity.