Multiple Choice
In a prokaryotic cell, where is the cell's DNA primarily located?
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1. Overview of Cell Biology
Prokaryotic Cell Architecture
Multiple Choice
In a typical prokaryotic cell, where is the cell's DNA primarily located?
A
Inside a membrane-bound nucleus surrounded by a nuclear envelope
B
Within mitochondria, organized as circular mitochondrial chromosomes
C
Inside the endoplasmic reticulum lumen where it is packaged into chromatin
D
In the nucleoid region of the cytoplasm (not enclosed by a membrane)
Verified step by step guidance1
Recall the fundamental structural differences between prokaryotic and eukaryotic cells, especially regarding the organization of genetic material.
Understand that prokaryotic cells lack membrane-bound organelles such as a nucleus or mitochondria, which are typical in eukaryotic cells.
Identify that in prokaryotes, DNA is not enclosed within a nuclear envelope but is instead located in a specific region of the cytoplasm called the nucleoid.
Recognize that the nucleoid is an irregularly-shaped region where the circular DNA molecule is concentrated, but it is not separated from the rest of the cytoplasm by a membrane.
Conclude that the cell's DNA in a typical prokaryotic cell is primarily located in the nucleoid region of the cytoplasm, distinguishing it from eukaryotic cells where DNA is inside a nucleus.
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