Scelta multipla
In most prokaryotic cells (bacteria and archaea), where is the cell’s chromosomal DNA primarily located?
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7. DNA and Chromosome Structure
Bacterial and Viral Chromosome Structure
Scelta multipla
In prokaryotic cells, where is the cell’s DNA primarily located?
A
Within chloroplasts
B
Inside a membrane-bound nucleus
C
Within mitochondria
D
In the nucleoid region of the cytoplasm (not enclosed by a membrane)
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Understand that prokaryotic cells differ from eukaryotic cells in that they lack membrane-bound organelles such as a nucleus, mitochondria, and chloroplasts.
Recall that in eukaryotic cells, DNA is enclosed within a membrane-bound nucleus, but prokaryotic cells do not have this structure.
Identify that the DNA in prokaryotic cells is located in a specific region called the nucleoid, which is not enclosed by a membrane.
Recognize that the nucleoid region is part of the cytoplasm where the cell's circular DNA molecule is concentrated.
Conclude that the cell’s DNA in prokaryotes is primarily located in the nucleoid region of the cytoplasm, distinguishing it from the locations in eukaryotic cells.
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