All GRE Subject Test: Biology Resources
Example Questions
Example Question #1 : Understanding Archaea
What comprises the cell wall of archaea?
Possible Answers:
Chitin
Peptidoglycan
Pseudopeptidoglycan
Glycogen
Cellulose
Correct answer:
Pseudopeptidoglycan
Explanation:
The correct answer is pseudopeptidoglycan. This is molecularly different than peptidoglycan, which comprises the bacterial cell wall. However, both pseudopeptidoglycan and peptidoglycan cell walls are similar in function, shape and structure. Cellulose comprises the cell walls of plants, chitin comprises the cell walls of fungi and glycogen is the animal form of stored glucose, and is found in the liver and skeletal muscle.
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All GRE Subject Test: Biology Resources
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