Question

The optimum temperature for rapid growth of mesophiles is:

• A. \( 40^\circ C \text{ to } 50^\circ C \)
• B. \( 50^\circ C \text{ to } 60^\circ C \)
• C. \( 15^\circ C \text{ to } 20^\circ C \)
• D. \( 25^\circ C \text{ to } 40^\circ C \)

Hint:

Microorganisms are classified by their optimum growth temperatures: 
- Psychrophiles: \( -5^\circ C \) to \( 15^\circ C \). 
- Mesophiles: \( 20^\circ C \) to \( 45^\circ C \). 
- Thermophiles: \( 45^\circ C \) to \( 80^\circ C \). 
Understanding these classifications helps in microbiology and industrial processes.

Answer 1

The Correct Option is D

Step 1: Understanding mesophiles. Mesophiles are microorganisms that thrive in moderate temperature ranges. They are commonly found in environments such as soil, water, and the human body. 

Step 2: Optimum temperature range. Mesophiles grow best at temperatures between \( 20^\circ C \) and \( 45^\circ C \), with the most rapid growth occurring between \( 25^\circ C \) and \( 40^\circ C \). 
This range supports their metabolic and enzymatic activities. 

Conclusion: The correct answer is \( (D) \ 25^\circ C \text{ to } 40^\circ C \).