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In eukaryotic chromosome structure, DNA coils tightly around histone proteins and further assembles into visible structures called what (especially during cell division)?
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7. DNA and Chromosome Structure
Eukaryotic Chromosome Structure
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In eukaryotic cells, where is most DNA found?
A
In the cytosol as free circular DNA molecules
B
In the nucleus, packaged into chromosomes
C
In ribosomes, where it is translated into protein
D
In the plasma membrane, where it forms ion channels
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Understand the structure of eukaryotic cells, which have distinct compartments including the nucleus, cytosol, ribosomes, and plasma membrane.
Recall that DNA is the molecule that stores genetic information and in eukaryotes, it is primarily located in the nucleus.
Recognize that in eukaryotic cells, DNA is organized into structures called chromosomes, which are tightly packaged to fit inside the nucleus.
Note that while some DNA can be found in mitochondria (and chloroplasts in plants), the majority of DNA is not free-floating in the cytosol nor associated with ribosomes or plasma membrane.
Conclude that the correct location of most DNA in eukaryotic cells is inside the nucleus, packaged into chromosomes.
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