What is the definition of thermophilic microorganisms?

Thermophilic microorganisms are defined as those that thrive at elevated temperatures, specifically above 133°F (or 56°C). These organisms are adapted to high-temperature environments, such as hot springs, compost heaps, and other geothermal habitats. They possess unique enzymes and cellular structures that function optimally at these temperatures, which differentiates them from other types of microorganisms that prefer cooler conditions.

In the context of environmental health and microbiology, thermophiles play important roles in processes such as composting and the breakdown of organic materials in high-temperature environments. Understanding the characteristics and optimal growth conditions of these microorganisms is crucial for applications in bioremediation and waste management, where temperature control can influence microbial activity and efficiency.

The other choices present definitions that do not align with the established understanding of thermophilic microorganisms, as they either refer to different temperature groups or imply a broader temperature tolerance that thermophiles do not exhibit.