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MIC 121 Introduction what are microbes Objective Question
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Question

According to the document, what makes steam a very efficient medium for heat transference in an autoclave compared to hot air?
Options
A Steam has a lower boiling point than water, allowing for faster sterilization.
B Steam at 100°C contains significantly more energy (heat of vaporization) than water at 100°C.
Correct Answer
C Steam promotes protein breakdown while simultaneously preventing coagulation.
D Steam acts as a powerful oxidant, directly destroying microbial cell walls.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 19, under 'WHY STEAM? (PRINCIPLE)', explains: 'It would require 540 kcal to convert that liter of water into steam, which means that steam at 100°C contains seven times as much energy as water at 100°C. That energy is what makes steam so much more efficient at destroying microorganisms.'

Hint

Focus on the 'WHY STEAM?' section, specifically the comparison of energy content between steam and water.

Question Info

Course: MIC 121
Topic: Introduction what are microbes
Type: Objective
Difficulty: Not specified
Question 645 of 984
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