Multiple Choice
Which of the following cellular structures lacks a membrane in prokaryotic cells?
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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 found?
A
Stored within the endoplasmic reticulum for transcription and translation
B
In the nucleoid region of the cytoplasm, not enclosed by a membrane-bound nucleus
C
Inside a membrane-bound nucleus surrounded by a nuclear envelope
D
Packaged within mitochondria, separate from the cytosol
Verified step by step guidance1
Understand the structural differences between prokaryotic and eukaryotic cells, focusing on the presence or absence of membrane-bound organelles.
Recall that prokaryotic cells lack a membrane-bound nucleus, which means their DNA is not enclosed within a nuclear envelope.
Identify the region in prokaryotic cells where DNA is concentrated, known as the nucleoid, which is an irregularly shaped area within the cytoplasm.
Recognize that the nucleoid is not surrounded by a membrane, distinguishing it from the nucleus found in eukaryotic cells.
Conclude that in prokaryotic cells, the DNA is primarily found in the nucleoid region of the cytoplasm, not inside membrane-bound organelles like the nucleus or mitochondria.
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