Multiple Choice
In a typical neuron, where is the nucleus located?
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1. Overview of Cell Biology
Eukaryotic Cell Architecture
Multiple Choice
In a typical eukaryotic cell, where is most genomic DNA found?
A
In lysosomes, where it is protected from degradation
B
In the cytosol as free circular DNA molecules
C
In the rough endoplasmic reticulum attached to ribosomes
D
In the nucleus, packaged into chromatin
Verified step by step guidance1
Recall the basic organization of a eukaryotic cell, which includes distinct membrane-bound organelles such as the nucleus, lysosomes, endoplasmic reticulum, and cytosol.
Understand that genomic DNA refers to the complete set of DNA within a cell, containing the genetic instructions necessary for the organism's development and function.
Recognize that in eukaryotic cells, genomic DNA is primarily located inside the nucleus, where it is tightly packaged into a complex called chromatin to efficiently organize and protect the DNA.
Eliminate other options by considering their functions: lysosomes contain enzymes for degradation, so DNA is not stored there; the cytosol contains free molecules but not genomic DNA in circular form (which is typical of prokaryotes or mitochondria); the rough endoplasmic reticulum is involved in protein synthesis, not DNA storage.
Conclude that the correct location of most genomic DNA in a typical eukaryotic cell is the nucleus, where it is packaged into chromatin.
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