Questions: Multiple Select Question Select all that apply How does microbial control via moist heat differ from control via dry heat? More than one answer may be correct. It does not require temperatures to be as high. It requires shorter exposure times. It requires longer exposure times. It requires much higher temperatures.

The correct answers are:

• It does not require temperatures to be as high.
• It requires shorter exposure times.

Explanation:

1. It does not require temperatures to be as high: Moist heat methods, such as autoclaving, typically operate at lower temperatures (e.g., 121°C) compared to dry heat methods (e.g., 160-170°C) to achieve sterilization. This is because moist heat is more effective at penetrating microbial cells and denaturing proteins.

2. It requires shorter exposure times: Moist heat methods generally require shorter exposure times to achieve the same level of microbial control compared to dry heat. For example, autoclaving at 121°C for 15-20 minutes is often sufficient, whereas dry heat sterilization might require 1-2 hours at 160-170°C.

3. It requires longer exposure times: This is incorrect. As mentioned, moist heat typically requires shorter exposure times compared to dry heat.

4. It requires much higher temperatures: This is incorrect. Moist heat methods operate at lower temperatures compared to dry heat methods.

Summary: Moist heat microbial control differs from dry heat in that it does not require temperatures to be as high and requires shorter exposure times.