Multiple Choice
Which of the following statements is true?
6. Cell Membrane & Transport
Archaeal Cell Membranes
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Thermophilic archaea may have tetraether lipids that:
A
Form bilayer membranes.
B
Form monolayer membranes.
C
Bind to and protect their DNA.
D
Form more stable tri-layer membranes.
Verified step by step guidance1
Understand the unique characteristics of thermophilic archaea, which are microorganisms that thrive in extremely high-temperature environments.
Recognize that the cell membranes of thermophilic archaea are adapted to withstand high temperatures, which can denature typical lipid bilayers.
Learn that tetraether lipids are a type of lipid found in the membranes of some archaea, characterized by their ability to span the entire membrane, forming a monolayer rather than a bilayer.
Explore how the monolayer structure of tetraether lipids provides increased stability and rigidity, which is beneficial in high-temperature environments.
Conclude that the presence of tetraether lipids in thermophilic archaea allows them to form monolayer membranes, which are more stable under extreme conditions compared to traditional bilayer membranes.
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