Dry heat
A)is less efficient than moist heat.
B)cannot sterilize.
C)includes tyndallization.
D)is used in devices called autoclaves.
E)will sterilize at 121°C for 15 minutes.

Question

Quizplus · Accepted Answer

Dry heat is less efficient than moist heat for sterilization because it requires higher temperatures and longer exposure times to achieve the same level of microbial inactivation as moist heat. Moist heat sterilization, such as that achieved with an autoclave (which uses steam under pressure), is more effective because water conducts heat more efficiently than air, allowing for quicker and more uniform heat penetration. Tyndallization is a method that involves intermittent sterilization with steam at atmospheric pressure, not dry heat, and autoclaves use moist heat, not dry heat. Dry heat can sterilize, but typically at higher temperatures and longer times than 121°C for 15 minutes, which is a standard condition for moist heat sterilization.

Dry Heat