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Multiple Choice
In prokaryotic cell architecture, what structure functions as the cell’s control center by housing the bacterial chromosome and regulating gene expression?
A
Nucleus
B
Peptidoglycan cell wall
C
Ribosome
D
Nucleoid
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1
Understand that in prokaryotic cells, unlike eukaryotic cells, there is no membrane-bound nucleus.
Identify that the structure which contains the bacterial chromosome (DNA) and controls gene expression is called the nucleoid.
Recall that the nucleoid is an irregularly-shaped region within the prokaryotic cell where the genetic material is located.
Recognize that other options like the nucleus (found in eukaryotes), peptidoglycan cell wall (provides structural support), and ribosome (site of protein synthesis) do not serve as the control center.
Conclude that the nucleoid functions as the cell’s control center by housing the bacterial chromosome and regulating gene expression.