Question Detail

MIC 121 Introduction what are microbes Objective Question

Question

How do deep freezers contribute to the preservation of substances and cultures?
Options
A By rapidly boiling samples to kill all microorganisms.
B By maintaining conditions that promote maximum microbial growth.
C By achieving extremely low temperatures where microbial growth is minimal.
Correct Answer
D By adding preservatives that chemically stabilize the samples.
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 35, under 'WORKING PRINCIPLE', states: 'Deep freezers are based on the principle that under extremely low temperatures, there is minimum microbial growth which allows for the protection and preservation of different substances.'

Hint

The 'WORKING PRINCIPLE' section for refrigerators and deep freezers will explain their preservation method.

Question Info