Multiple Choice
Which type of cell does not contain a nucleus?
1. Overview of Cell Biology
Prokaryotic Cell Architecture
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In a prokaryotic cell, what is the primary role of a plasmid?
A
It is the protein-synthesizing structure where mRNA is translated into polypeptides.
B
It is the rigid outer layer made of peptidoglycan that maintains cell shape and prevents lysis.
C
It is a small circular DNA molecule that replicates independently of the chromosome and often carries genes such as antibiotic-resistance genes.
D
It is the membrane-bound organelle responsible for ATP production through oxidative phosphorylation.
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