All GRE Subject Test: Biology Resources
Example Questions
Example Question #1 : Identifying Archaea
Which of these choices is not a characteristic present in archaea?
Possible Answers:
Cell walls are made of peptidoglycan
70S ribosome
Chromosomes and plasmids are circular
S-layer
Glycerol diethers in lipid bilayers
Correct answer:
Cell walls are made of peptidoglycan
Explanation:
Only bacterial have peptidoglycan cell walls. The other traits are typical of at least some known archaea. The s-layer involves crystalline arrays of proteinaceous subunits, which are common to some archaea and bacteria.
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All GRE Subject Test: Biology Resources
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