Scelta multipla
In prokaryotic cells, where is the cell’s DNA primarily stored?
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7. DNA and Chromosome Structure
Bacterial and Viral Chromosome Structure
Scelta multipla
In prokaryotes, DNA molecules are primarily located in the:
A
Nucleoid region
B
Nucleus enclosed by a nuclear envelope
C
Endoplasmic reticulum lumen
D
Mitochondrial matrix
Guida verificata passo dopo passo1
Understand the cellular structure of prokaryotes: Prokaryotic cells lack membrane-bound organelles such as a nucleus, mitochondria, and endoplasmic reticulum.
Recall that in prokaryotes, the DNA is not enclosed within a nuclear envelope, unlike eukaryotic cells.
Identify the region in prokaryotic cells where DNA is concentrated, which is called the nucleoid region; it is an irregularly shaped area within the cytoplasm.
Recognize that options like 'Nucleus enclosed by a nuclear envelope', 'Endoplasmic reticulum lumen', and 'Mitochondrial matrix' refer to eukaryotic cell structures and are not present in prokaryotes.
Conclude that the correct location of DNA in prokaryotes is the nucleoid region, as it is the site where the circular DNA molecule is found.
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