At what temperature do most pathogenic microorganisms grow most?

Correct option is B

​​​​​Correct Answer:(b) 37°C​

Most pathogenic microorganisms (disease-causing organisms) grow optimally at 37°C, which is the average body temperature of humans. This temperature provides an ideal environment for their metabolic activities, replication, and survival, making it conducive for infection in host organisms.

Information Booster:
● Optimal Growth Range: Pathogens typically grow best in the range of 20°C to 40°C, with 37°C being the most favorable.
● Human Body Temperature: As 37°C is the normal body temperature, many pathogens are adapted to thrive in such conditions.
● Thermophiles and Psychrophiles: Microorganisms outside this temperature range include thermophiles (grow at higher temperatures) and psychrophiles (grow at lower temperatures).
● Food Safety: Pathogens can grow rapidly in food kept at temperatures between 5°C and 60°C (the "danger zone").
● Common Pathogens: Bacteria like Escherichia coli and Salmonella proliferate rapidly at 37°C.

Additional Knowledge:

• (a) 20°C: Too low for optimal growth of most pathogens, though some can survive at this temperature.
• (c) 49°C: Suitable for thermophilic organisms, not for most human pathogens.
• (d) 74°C: Far above the growth range of pathogens; such temperatures are used to kill microorganisms through cooking or sterilization.