Question

in which of the following environments would you expect to find mesophilic microorganisms?

in your refrigerator

around a volcanic fissure at the bottom of the ocean

in the human body

in an arid desert area

Explanation:

Identify mesophile temperature range

Mesophiles are organisms that grow best in moderate temperatures, typically between \(20^\circ\text{C}\) and \(45^\circ\text{C}\) (\(68^\circ\text{F}\) to \(113^\circ\text{F}\)).

Evaluate the given environments

• Refrigerator: typically \(4^\circ\text{C}\) (favors psychrophiles/psychrotolerants).
• Volcanic fissure: extremely high temperatures (favors hyperthermophiles).
• Human body: constant temperature of approximately \(37^\circ\text{C}\) (falls perfectly within the mesophilic range).
• Arid desert area: can experience extreme heat (often favoring thermophiles).

Determine the correct option

The human body provides an optimal, stable environment of \(37^\circ\text{C}\) for mesophilic microorganisms.

Answer:

• in your refrigerator
• around a volcanic fissure at the bottom of the ocean
• in the human body (Correct answer)
• in an arid desert area