Multiple Choice
In eukaryotic cell architecture, what is the primary purpose of the cell wall in organisms such as plants and fungi?
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1. Overview of Cell Biology
Eukaryotic Cell Architecture
Multiple Choice
In eukaryotic cell architecture, which organelle is commonly referred to as the cell's control center because it houses DNA and regulates gene expression?
A
Nucleus
B
Mitochondrion
C
Golgi apparatus
D
Ribosome
Verified step by step guidance1
Understand the role of each organelle listed in the problem: the nucleus, mitochondrion, Golgi apparatus, and ribosome.
Recall that the nucleus is the organelle that contains the cell's DNA, which holds the genetic instructions necessary for the cell's functions.
Recognize that the nucleus regulates gene expression by controlling which genes are turned on or off, thus directing protein synthesis and cell activity.
Compare this with other organelles: mitochondria generate energy, Golgi apparatus modifies and packages proteins, and ribosomes synthesize proteins but do not control gene expression.
Conclude that the organelle commonly called the cell's control center because it houses DNA and regulates gene expression is the nucleus.
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