Multiple Choice
In eukaryotic animal cells, what is the primary function of the nucleolus?
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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 store and protect the cell’s DNA and regulate gene expression by controlling transcription
B
To modify, sort, and package proteins and lipids for secretion and delivery to organelles
C
To synthesize ATP through oxidative phosphorylation across the inner membrane
D
To digest macromolecules and recycle cellular components using hydrolytic enzymes
Verified step by step guidance1
Identify the organelle in question: the nucleus is a membrane-bound structure found in eukaryotic cells.
Recall the main components and functions of the nucleus, which include housing the cell's genetic material (DNA) and controlling cellular activities.
Understand that the nucleus protects DNA from damage and regulates gene expression by controlling the process of transcription, where DNA is transcribed into RNA.
Differentiate the nucleus from other organelles by their functions: for example, the Golgi apparatus modifies and packages proteins, mitochondria synthesize ATP, and lysosomes digest macromolecules.
Conclude that the primary function of the nucleus is to store and protect DNA and regulate gene expression through transcription control.
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