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In most prokaryotic cells, where is the majority of the genomic DNA found?
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7. DNA and Chromosome Structure
Bacterial and Viral Chromosome Structure
Multiple Choice
In prokaryotic cells, where is the cell’s DNA primarily found?
A
Within mitochondria
B
In linear chromosomes housed within the endoplasmic reticulum
C
Inside a membrane-bound nucleus
D
In the nucleoid region of the cytoplasm (not enclosed by a membrane)
검증된 단계별 안내1
Understand the basic structure of prokaryotic cells: Prokaryotes lack membrane-bound organelles such as a nucleus or mitochondria.
Recall that in prokaryotic cells, DNA is not enclosed within a membrane-bound nucleus, unlike eukaryotic cells.
Identify that the DNA in prokaryotes is primarily located in a region called the nucleoid, which is an irregularly shaped area within the cytoplasm.
Note that the nucleoid region contains the cell's circular chromosome and is not separated from the rest of the cytoplasm by a membrane.
Conclude that the correct location of prokaryotic DNA is the nucleoid region of the cytoplasm, distinguishing it from eukaryotic DNA localization.
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