Multiple Choice
In eukaryotic cells, which organelle encloses and protects the cell’s DNA?
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1. Overview of Cell Biology
Eukaryotic Cell Architecture
Multiple Choice
In eukaryotic cell architecture, what is the primary function of the nucleus?
A
To degrade macromolecules and recycle cellular components
B
To store and protect the cell’s DNA and regulate gene expression
C
To modify and package proteins for secretion
D
To synthesize ATP through oxidative phosphorylation
Verified step by step guidance1
Identify the organelle in question: the nucleus is a membrane-bound structure found in eukaryotic cells.
Recall the main functions of the nucleus, which include housing the cell's genetic material (DNA) and controlling cellular activities by regulating gene expression.
Understand that the nucleus protects DNA from damage and provides a controlled environment for processes like DNA replication and transcription.
Differentiate the nucleus from other organelles: for example, lysosomes degrade macromolecules, the Golgi apparatus modifies and packages proteins, and mitochondria synthesize ATP.
Conclude that the primary function of the nucleus is to store and protect the cell’s DNA and regulate gene expression.
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