GRE Subject Test: Biology : Understanding Archaea

Study concepts, example questions & explanations for GRE Subject Test: Biology

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Example Questions

Example Question #1 : Understanding Archaea

What comprises the cell wall of archaea?

Possible Answers:

Pseudopeptidoglycan 

Chitin

Cellulose

Glycogen 

Peptidoglycan

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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