Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
An acidophile is a microorganism that thrives in acidic environments, typically with a pH below 5. These organisms have adapted mechanisms to maintain stability and functionality in low pH conditions.
5 Must Know Facts For Your Next Test
Acidophiles can be found in environments such as sulfuric hot springs and acidic mine drainage.
They often possess specialized proton pumps and enzymes that function optimally at low pH levels.
Some acidophiles can produce acids as metabolic byproducts, contributing to their environment's acidity.
Examples of acidophiles include certain species of bacteria, archaea, and fungi.
Understanding the role of acidophiles is crucial in bioremediation processes and industrial applications like bioleaching.
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Related terms
Alkaliphile: A microorganism that thrives in alkaline environments with a pH above 9.
Neutrophile: A microorganism that prefers neutral pH environments around pH 7.
Extremophile: An organism that thrives in extreme environmental conditions, such as high salinity, temperature, or acidity.