Which of the following temperature ranges is the preferred range for most human pathogens?

Correct Answer

B. 34-37°C

Explanation

Most human pathogens thrive in temperatures close to normal human body temperature, which is around 37°C. This range (34-37°C) provides optimal conditions for bacterial growth and replication, making it the ideal temperature for culturing many medically significant microorganisms.

Why other options are wrong

A. 29-33°C

This is incorrect because while some microorganisms can grow in this range, it is not the optimal temperature for human pathogens. Many bacteria that infect humans prefer slightly warmer conditions closer to body temperature.

C. 38-40°C

This is incorrect because although some pathogens can tolerate higher temperatures, prolonged exposure to temperatures above 37°C can stress bacterial cells and slow down their growth.

D. 41-45°C

This is incorrect because most human pathogens do not grow well at these temperatures. Higher temperatures can denature proteins and enzymes, inhibiting bacterial growth and replication.