Texas A&M University (TAMU) BIOL112 Introductory Biology II Lab Exam 1 Practice Exam

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In what type of environments are archaea typically found?

Freshwater and soil

Harsh and extreme conditions

Archaea are a unique group of microorganisms that often thrive in harsh and extreme environments, which distinguishes them from many other life forms. These extreme conditions can include high temperatures, high salinity, and extreme acidity or alkalinity. For instance, some archaea, known as thermophiles, are found in hot springs and hydrothermal vents, while halophiles thrive in very saline environments such as salt lakes. Their cellular structures and metabolic pathways are adapted to withstand conditions that would be lethal to most bacteria and eukaryotic cells. This ability to inhabit extreme environments illustrates the versatility and resilience of archaea as a domain of life, highlighting their importance in various ecological niches where other organisms cannot survive.

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Temperate regions

Urban areas

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