Concept explainers
a.
To determine: The environments where hyperthermophiles are found.
Introduction: Microorganisms are capable of growing over a broad range of temperatures from lesser than 0℃ to more than 100℃. The microbes are classified into four different groups on the basis of the temperature required by them, namely mesophiles, thermophiles, psychrophiles, and hyperthermophiles.
a.

Explanation of Solution
The hyperthermophiles are found at volcanic heated hot springs and at thermal vents present deep within the ocean floor.
b.
To determine: The environments where the thermophiles are found.
b.

Explanation of Solution
The thermophiles are found at compost piles where the temperature reaches above 60℃ to 65℃ due to fermentation activity and in soils where the temperature at midday exceeds 50℃.
c.
To determine: The environments where the mesophiles are found.
c.

Explanation of Solution
The mesophiles are found in many environments like soil and the human body where the temperature is between 35℃ and 40℃.
d.
To determine: The environments where the psychrophiles are found.
d.

Explanation of Solution
The psychrophiles are found in the permanent cold regions such as Antarctic and Arctic’s supercooled waters. The temperature of these region is ranging from -20℃ to +10℃.
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Chapter 25 Solutions
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