Open Question
Archaea cell walls tend to contain:
a. lipid bilayers.
b. pseudopeptidoglycan.
c. cholesterol.
d. flagellin.
e. peptidoglycan.
1. Introduction to Microbiology
Introduction to Archaea
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If you wanted to increase your chances of obtaining a member of Archaea (rather than a member of another domain), which would be the best site to obtain a sample?
A
Inside a human intestine.
B
On the surface of human skin.
C
A 95°C (203°F) hot spring in Yellowstone.
D
A 22°C (72°F) freshwater spring in Hawaii.
E
On the surface of a raw hamburger patty.
Verified step by step guidance1
Understand the characteristics of Archaea: Archaea are a group of microorganisms that are distinct from bacteria and eukaryotes. They are known for thriving in extreme environments, such as high temperatures, high salinity, or acidic conditions.
Identify the environments listed in the problem: The options provided include a human intestine, human skin, a hot spring in Yellowstone, a freshwater spring in Hawaii, and a raw hamburger patty.
Consider the typical habitats of Archaea: Archaea are often found in extreme environments, such as hot springs, salt lakes, and hydrothermal vents. These environments provide the conditions that many Archaea species require to survive and thrive.
Evaluate the options based on the characteristics of Archaea: Among the options, a 95°C (203°F) hot spring in Yellowstone is an extreme environment that matches the typical habitat of many Archaea species, particularly thermophiles, which are Archaea that thrive at high temperatures.
Conclude which site is most likely to yield Archaea: Given the preference of Archaea for extreme conditions, the hot spring in Yellowstone is the best site to obtain a sample of Archaea, as it provides the high temperature environment that many Archaea species favor.
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