Scelta multipla
In prokaryotic cells, 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, how is DNA primarily stored and organized within the cytoplasm?
A
As multiple linear chromosomes enclosed within a membrane-bound nucleus
B
As DNA wrapped around histone proteins forming nucleosomes and packaged into chromatin
C
As RNA genomes packaged inside a protein capsid within the cytoplasm
D
As a single, usually circular chromosome located in the nucleoid region, often supercoiled and associated with nucleoid-associated proteins
Guida verificata passo dopo passo1
Understand that prokaryotic cells lack a membrane-bound nucleus, so their DNA is not enclosed within a nuclear membrane.
Recognize that prokaryotic DNA is typically organized as a single, circular chromosome rather than multiple linear chromosomes.
Learn that this circular chromosome is located in a region of the cytoplasm called the nucleoid, which is not membrane-bound.
Know that the DNA in prokaryotes is often supercoiled to compact it efficiently within the limited space of the nucleoid.
Identify that nucleoid-associated proteins help in organizing and stabilizing the supercoiled DNA structure in prokaryotes.
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