You are analyzing some material gathered from a bacterial cell. You find it tests positive for both polysaccharides and amino acids. What part of the bacterial cell did this sample come from?
A. S-layer
B. glycocalyx
C. cell membrane
D. nucleoid
E. cell wall
Answer: E
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What will be an ideal response?
Which biological events took place during the Paleozoic Era and the Mesozoic Era?
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