Multiple Choice
In a typical prokaryotic cell, where is the cell’s chromosomal DNA primarily located?
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1. Overview of Cell Biology
Prokaryotic Cell Architecture
Multiple Choice
Which of the following structures is present in a typical prokaryotic cell?
A
Membrane-bound nucleus
B
Mitochondria
C
70S ribosomes
D
Endoplasmic reticulum
Verified step by step guidance1
Step 1: Understand the basic differences between prokaryotic and eukaryotic cells. Prokaryotic cells lack membrane-bound organelles such as a nucleus, mitochondria, and endoplasmic reticulum.
Step 2: Recall that prokaryotic cells have ribosomes, but these ribosomes are smaller (70S) compared to the larger (80S) ribosomes found in eukaryotic cells.
Step 3: Identify that a membrane-bound nucleus is a defining feature of eukaryotic cells and is absent in prokaryotes.
Step 4: Recognize that mitochondria and endoplasmic reticulum are also membrane-bound organelles found only in eukaryotic cells, not in prokaryotes.
Step 5: Conclude that the structure present in a typical prokaryotic cell from the given options is the 70S ribosomes, which are responsible for protein synthesis.
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