Multiple Choice
In eukaryotic cell architecture, what is the primary function of the cell wall (e.g., in plants and fungi)?
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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
It modifies, sorts, and packages proteins and lipids for secretion or delivery to other organelles.
B
It synthesizes most cellular lipids and detoxifies drugs and poisons.
C
It stores and protects the cell’s DNA and regulates gene expression, directing many cellular activities.
D
It is the main site of ATP production through oxidative phosphorylation.
Verified step by step guidance1
Identify the organelle mentioned in the question: the nucleus, which is a key component of eukaryotic cells.
Recall the primary functions of the nucleus, focusing on its role in storing and protecting genetic material (DNA).
Understand that the nucleus regulates gene expression, which means it controls which genes are turned on or off, thereby directing cellular activities.
Differentiate the nucleus from other organelles by recognizing that it does not modify proteins (a function of the Golgi apparatus), synthesize lipids (a function of the smooth endoplasmic reticulum), or produce ATP (a function of mitochondria).
Conclude that the nucleus's main function is to store and protect DNA and regulate gene expression, which is essential for cell function and activity.
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